Add Rust, Groovy, Grails & Scala to font; fix rust-plain.svg and groovy-plain.svg to match requirements for icomoon app

devicon.css

@@ -1,10 +1,10 @@
 @font-face {
 	font-family: 'devicon';
-    src:  url('fonts/devicon.eot?56yybb');
-    src:  url('fonts/devicon.eot?56yybb#iefix') format('embedded-opentype'),
-    url('fonts/devicon.ttf?56yybb') format('truetype'),
-    url('fonts/devicon.woff?56yybb') format('woff'),
-    url('fonts/devicon.svg?56yybb#devicon') format('svg');
+  src:  url('fonts/devicon.eot?ibclp5');
+  src:  url('fonts/devicon.eot?ibclp5#iefix') format('embedded-opentype'),
+    url('fonts/devicon.ttf?ibclp5') format('truetype'),
+    url('fonts/devicon.woff?ibclp5') format('woff'),
+    url('fonts/devicon.svg?ibclp5#devicon') format('svg');
 	font-weight: normal;
 	font-style: normal;
   	font-display: block;
@@ -24,6 +24,22 @@
 	-webkit-font-smoothing: antialiased;
 	-moz-osx-font-smoothing: grayscale;
 }
+
+.devicon-groovy-plain:before {
+  content: "\e958";
+}
+.devicon-rust-plain:before {
+  content: "\e959";
+}
+.devicon-scala-plain-wordmark:before {
+  content: "\e95a";
+}
+.devicon-scala-plain:before {
+  content: "\e95b";
+}
+.devicon-grails-plain:before {
+  content: "\e95c";
+}
 .devicon-sketch-line-wordmark:before {
   content: "\e94c";
 }