Fix file icons on android theme

In android (non dark) theme incoming file attachments were all rendering the
generic file icon instead of media-type-specific icons.

// FREEBIE

stylesheets/_android.scss

@@ -50,6 +50,15 @@
 
   .incoming .bubble .fileView .icon {
     @include color-svg('../images/file.svg', white);
+    &.audio {
+      @include color-svg('../images/audio.svg', white);
+    }
+    &.video {
+      @include color-svg('../images/video.svg', white);
+    }
+    &.voice {
+      @include color-svg('../images/voice.svg', white);
+    }
   }
 
   button.clock {

stylesheets/manifest.css

@@ -2137,6 +2137,18 @@ li.entry .error-icon-container {
   -webkit-mask: url("../images/file.svg") no-repeat center;
   -webkit-mask-size: 100%;
   background-color: white; }
+  .android .incoming .bubble .fileView .icon.audio {
+    -webkit-mask: url("../images/audio.svg") no-repeat center;
+    -webkit-mask-size: 100%;
+    background-color: white; }
+  .android .incoming .bubble .fileView .icon.video {
+    -webkit-mask: url("../images/video.svg") no-repeat center;
+    -webkit-mask-size: 100%;
+    background-color: white; }
+  .android .incoming .bubble .fileView .icon.voice {
+    -webkit-mask: url("../images/voice.svg") no-repeat center;
+    -webkit-mask-size: 100%;
+    background-color: white; }
 
 .android button.clock {
   -webkit-mask: url("../images/clock.svg") no-repeat center;