Fix award emoji picker for relative_url

MR !2888 caused a regression where the emoji picker does not load when
using relative_url, because the path for the controller was hardcoded.

app/assets/javascripts/awards_handler.coffee

 class @AwardsHandler
-  constructor: (@post_emoji_url, @noteable_type, @noteable_id, @aliases) ->
+  constructor: (@get_emojis_url, @post_emoji_url, @noteable_type, @noteable_id, @aliases) ->
     $(".js-add-award").on "click", (event) =>
       event.stopPropagation()
       event.preventDefault()
@@ -34,7 +34,7 @@ class @AwardsHandler
         $("#emoji_search").focus()
     else
       $('.js-add-award').addClass "is-loading"
-      $.get "/emojis", (response) =>
+      $.get @get_emojis_url, (response) =>
         $('.js-add-award').removeClass "is-loading"
         $(".js-award-holder").append response
         setTimeout =>

app/views/votes/_votes_block.html.haml

@@ -15,12 +15,14 @@
 
 - if current_user
   :javascript
+    var get_emojis_url = "#{emojis_path}";
     var post_emoji_url = "#{award_toggle_namespace_project_notes_path(@project.namespace, @project)}";
     var noteable_type = "#{votable.class.name.underscore}";
     var noteable_id = "#{votable.id}";
     var aliases = #{AwardEmoji.aliases.to_json};
 
     window.awards_handler = new AwardsHandler(
+      get_emojis_url,
       post_emoji_url,
       noteable_type,
       noteable_id,