Merge pull request #378 from rgarmsen2295/mm-316c

MM-316 Allows users to drag and drop files from their computer to the center pane or RHS to upload them

web/react/pages/channel.jsx

@@ -34,6 +34,7 @@ var ChannelInfoModal = require('../components/channel_info_modal.jsx');
 var AccessHistoryModal = require('../components/access_history_modal.jsx');
 var ActivityLogModal = require('../components/activity_log_modal.jsx');
 var RemovedFromChannelModal = require('../components/removed_from_channel_modal.jsx')
+var FileUploadOverlay = require('../components/file_upload_overlay.jsx');
 
 var AsyncClient = require('../utils/async_client.jsx');
 
@@ -224,4 +225,10 @@ global.window.setup_channel_page = function(team_name, team_type, team_id, chann
         document.getElementById('removed_from_channel_modal')
     );
 
+    React.render(
+        <FileUploadOverlay
+            overlayType='center' />,
+        document.getElementById('file_upload_overlay')
+    );
+
 };