MDL-54944 js: ensure functions are consistent in return val

Mostly we are being incosnistent when giving an early-exit shortcut.

Detected by http://eslint.org/docs/rules/consistent-return

admin/tool/lp/amd/src/competencypicker.js

@@ -288,7 +288,7 @@ define(['jquery',
         $.each(this._frameworks, function(i, f) {
             if (f.id == fid) {
                 frm = f;
-                return false;
+                return;
             }
         });
         return frm;

admin/tool/lp/amd/src/competencypicker_user_plans.js

@@ -129,7 +129,7 @@ define(['jquery',
         $.each(this._plans, function(i, f) {
             if (f.id == id) {
                 plan = f;
-                return false;
+                return;
             }
         });
         return plan;

admin/tool/lp/amd/src/competencyruleconfig.js

@@ -137,7 +137,7 @@ define(['jquery',
         $.each(this._rules, function(index, rule) {
             if (rule.canConfig()) {
                 can = true;
-                return false;
+                return;
             }
         });
         return can;
@@ -163,7 +163,7 @@ define(['jquery',
     RuleConfig.prototype.display = function() {
         var self = this;
         if (!self._competency) {
-            return;
+            return false;
         }
         return self._render().then(function(html) {
             return Str.get_string('competencyrule', 'tool_lp').then(function(title) {
@@ -276,7 +276,7 @@ define(['jquery',
         $.each(this._rules, function(index, rule) {
             if (rule.getType() == type) {
                 result = rule;
-                return false;
+                return;
             }
         });
 
@@ -297,7 +297,7 @@ define(['jquery',
         $.each(self._rulesModules, function(index, modInfo) {
             if (modInfo.type == type) {
                 name = modInfo.name;
-                return false;
+                return;
             }
         });
         return name;

admin/tool/lp/amd/src/menubar.js

@@ -175,7 +175,7 @@ define(['jquery'], function($) {
             if (this.handlers) {
                 $.each(this.handlers, function(selector, handler) {
                     if (eventHandled) {
-                        return false;
+                        return;
                     }
                     if (item.find(selector).length > 0) {
                         var callable = $.proxy(handler, anchor);

lib/amd/src/notification.js

@@ -66,7 +66,7 @@ function(Y, $, log) {
         setupTargetRegion: function() {
             var targetRegion = $('#' + notificationModule.fieldName);
             if (targetRegion.length) {
-                return;
+                return false;
             }
 
             var newRegion = $('<span>').attr('id', notificationModule.fieldName);

lib/amd/src/tag.js

@@ -102,7 +102,7 @@ define(['jquery', 'core/ajax', 'core/templates', 'core/notification', 'core/str'
                 var form = $(this).closest('form').get(0),
                     cnt = $(form).find("input[type=checkbox]:checked").length;
                 if (!cnt) {
-                    return false;
+                    return;
                 }
                 var tempElement = $("<input type='hidden'/>").attr('name', this.name);
                 e.preventDefault();
@@ -134,7 +134,7 @@ define(['jquery', 'core/ajax', 'core/templates', 'core/notification', 'core/str'
                             notification.alert(s[0], s[1], s[2]);
                         }
                     );
-                    return false;
+                    return;
                 }
                 var tempElement = $("<input type='hidden'/>").attr('name', this.name);
                 str.get_strings([

mod/lti/amd/src/cartridge_registration_form.js

@@ -138,13 +138,13 @@ define(['jquery', 'core/ajax', 'core/notification', 'mod_lti/tool_type', 'mod_lt
      */
     var submitCartridgeURL = function() {
         if (isLoading()) {
-            return;
+            return false;
         }
 
         var url = getCartridgeURL();
         // No URL? Do nothing.
         if (url === "") {
-            return;
+            return false;
         }
 
         startLoading();