restricted note edit shortcut to only up key

Updated CHANGELOG

Removed CHANGELOG entry

Moved conditional to helper method

app/assets/javascripts/notes.js.coffee

@@ -102,12 +102,15 @@ class @Notes
 
   keydownNoteText: (e) ->
     $this = $(this)
-    if $this.val() is '' and e.which is 38 #aka the up key
+    if $this.val() is '' and e.which is 38 and not isMetaKey e
       myLastNote = $("li.note[data-author-id='#{gon.current_user_id}'][data-editable]:last")
       if myLastNote.length
         myLastNoteEditBtn = myLastNote.find('.js-note-edit')
         myLastNoteEditBtn.trigger('click', [true, myLastNote])
 
+  isMetaKey = (e) ->
+    (e.metaKey or e.ctrlKey or e.altKey or e.shiftKey)
+
   initRefresh: ->
     clearInterval(Notes.interval)
     Notes.interval = setInterval =>