[WIP] Use FontAwesome Component for Vue (#3127)

* wip

* Rename

* Clean up

* Clean up

* wip

* wip

* Enable tree shaking

* ✌️

* ✌️

* wip

* wip

* Clean up

src/client/app/desktop/views/components/messaging-room-window.vue

@@ -1,6 +1,6 @@
 <template>
 <mk-window ref="window" width="500px" height="560px" :popout-url="popout" @closed="destroyDom">
-	<span slot="header" :class="$style.header">%fa:comments%%i18n:@title% {{ user | userName }}</span>
+	<span slot="header" :class="$style.header"><fa icon="comments"/>%i18n:@title% {{ user | userName }}</span>
 	<mk-messaging-room :user="user" :class="$style.content"/>
 </mk-window>
 </template>
@@ -22,7 +22,7 @@ export default Vue.extend({
 
 <style lang="stylus" module>
 .header
-	> [data-fa]
+	> [data-icon]
 		margin-right 4px
 
 .content