Fix attachment upload link bug caused by introduction of zen mode.

app/assets/javascripts/markdown_area.js.coffee

@@ -27,7 +27,7 @@ $(document).ready ->
   dropzone = $(".div-dropzone").dropzone(
     url: project_image_path_upload
     dictDefaultMessage: ""
-    clickable: false
+    clickable: true
     paramName: "markdown_img"
     maxFilesize: 10
     uploadMultiple: false
@@ -190,7 +190,7 @@ $(document).ready ->
 
   $(".markdown-selector").click (e) ->
     e.preventDefault()
-    $(@).closest(".div-dropzone-wrapper").find(".div-dropzone").click()
+    $(@).closest(".note-write-holder").find(".div-dropzone").click()
     return
 
   return