Disable translation of some strings in .ui files

They are either
* placeholder text or
* other text that is never shown to the user

src/AudioControls.ui

@@ -71,7 +71,7 @@
 <item>
 <widget class="ImageButton" name="prevButton">
 <property name="text">
-<string>Prev</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Prev</string>
 </property>
 </widget>
 </item>
@@ -83,14 +83,14 @@
 <item>
 <widget class="ImageButton" name="playPauseButton">
 <property name="text">
-<string>Play</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Play</string>
 </property>
 </widget>
 </item>
 <item>
 <widget class="ImageButton" name="pauseButton">
 <property name="text">
-<string>Pause</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Pause</string>
 </property>
 </widget>
 </item>
@@ -99,7 +99,7 @@
 <item>
 <widget class="ImageButton" name="nextButton">
 <property name="text">
-<string>Next</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Next</string>
 </property>
 </widget>
 </item>
@@ -225,7 +225,7 @@
 </size>
 </property>
 <property name="text">
-<string>Artist</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Artist</string>
 </property>
 </widget>
 </item>
@@ -244,7 +244,7 @@
 </size>
 </property>
 <property name="text">
-<string>Album</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Album</string>
 </property>
 </widget>
 </item>
@@ -292,7 +292,7 @@
 <cursorShape>PointingHandCursor</cursorShape>
 </property>
 <property name="text">
-<string>social</string>
+<string notr="true" extracomment="not translatable because is placeholder text">social</string>
 </property>
 </widget>
 </item>
@@ -308,7 +308,7 @@
 <cursorShape>PointingHandCursor</cursorShape>
 </property>
 <property name="text">
-<string>love</string>
+<string notr="true" extracomment="not translatable because is placeholder text">love</string>
 </property>
 </widget>
 </item>
@@ -341,7 +341,7 @@
 <cursorShape>PointingHandCursor</cursorShape>
 </property>
 <property name="text">
-<string>resolver</string>
+<string notr="true" extracomment="not translatable because is placeholder text">resolver</string>
 </property>
 </widget>
 </item>
@@ -377,7 +377,7 @@
 <item>
 <widget class="QLabel" name="timeLabel">
 <property name="text">
-<string>Time</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Time</string>
 </property>
 <property name="alignment">
 <set>Qt::AlignLeft|Qt::AlignVCenter</set>
@@ -406,7 +406,7 @@
 <item>
 <widget class="QLabel" name="timeLeftLabel">
 <property name="text">
-<string>Time Left</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Time Left</string>
 </property>
 <property name="alignment">
 <set>Qt::AlignRight|Qt::AlignVCenter</set>
@@ -487,7 +487,7 @@
 </sizepolicy>
 </property>
 <property name="text">
-<string>Shuffle</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Shuffle</string>
 </property>
 </widget>
 </item>
@@ -500,7 +500,7 @@
 </sizepolicy>
 </property>
 <property name="text">
-<string>Repeat</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Repeat</string>
 </property>
 </widget>
 </item>
@@ -538,7 +538,7 @@
 </sizepolicy>
 </property>
 <property name="text">
-<string>Low</string>
+<string notr="true" extracomment="not translatable because is placeholder text">Low</string>
 </property>
 </widget>
 </item>
@@ -570,7 +570,7 @@
 </sizepolicy>
 </property>
 <property name="text">
-<string>High</string>
+<string notr="true" extracomment="not translatable because is placeholder text">High</string>
 </property>
 </widget>
 </item>

src/SearchBox.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QHBoxLayout" name="horizontalLayout">
    <item>

src/Settings_Accounts.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="margin">

src/Settings_Advanced.ui

@@ -17,7 +17,7 @@
    </sizepolicy>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="margin">

src/Settings_Collection.ui

@@ -17,7 +17,7 @@
    </sizepolicy>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="margin">

src/SocialWidget.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="spacing">
@@ -66,7 +66,7 @@
           </size>
          </property>
          <property name="text">
-          <string>Cover</string>
+          <string notr="true" extracomment="not translatable because is placeholder text">Cover</string>
          </property>
         </widget>
        </item>
@@ -123,7 +123,7 @@
        <item>
         <widget class="QLabel" name="charsLeftLabel">
          <property name="text">
-          <string>TextLabel</string>
+          <string notr="true" extracomment="not translatable because is placeholder text">TextLabel</string>
          </property>
         </widget>
        </item>

src/accounts/zeroconf/ConfigWidget.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout_2">
    <property name="topMargin">

src/libtomahawk/accounts/lastfm/LastFmConfig.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>

src/libtomahawk/accounts/spotify/SpotifyAccountConfig.ui

@@ -17,7 +17,7 @@
    </sizepolicy>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>

src/libtomahawk/context/ContextWidget.ui

@@ -23,7 +23,7 @@
    </size>
   </property>
   <property name="windowTitle">
-   <string>InfoBar</string>
+   <string notr="true" comment="not translatable because not shown to the user">InfoBar</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>

src/libtomahawk/filemetadata/MetadataEditor.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>

src/libtomahawk/infobar/InfoBar.ui

@@ -23,7 +23,7 @@
    </size>
   </property>
   <property name="windowTitle">
-   <string>InfoBar</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">InfoBar</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout_3">
    <item>

src/libtomahawk/playlist/QueueView.ui

@@ -23,7 +23,7 @@
    </size>
   </property>
   <property name="windowTitle">
-   <string>InfoBar</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">InfoBar</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>

src/libtomahawk/widgets/infowidgets/AlbumInfoWidget.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="spacing">
@@ -43,7 +43,7 @@
         </size>
        </property>
        <property name="text">
-        <string>Cover</string>
+        <string notr="true" extracomment="not translatable because is placeholder text">Cover</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignCenter</set>

src/libtomahawk/widgets/infowidgets/ArtistInfoWidget.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="spacing">
@@ -43,7 +43,7 @@
         </size>
        </property>
        <property name="text">
-        <string>Cover</string>
+        <string notr="true" extracomment="not translatable because is placeholder text">Cover</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignCenter</set>

src/libtomahawk/widgets/infowidgets/TrackInfoWidget.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Form</string>
+   <string notr="true" extracomment="not translatable because not shown to the user">Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="spacing">
@@ -43,7 +43,7 @@
         </size>
        </property>
        <property name="text">
-        <string>Cover</string>
+        <string notr="true" extracomment="not translatable because is placeholder test">Cover</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignCenter</set>
@@ -78,7 +78,7 @@
         </size>
        </property>
        <property name="text">
-        <string>Statistics</string>
+        <string notr="true" extracomment="not translatable because is placeholder test">Statistics</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignCenter</set>