WebEditor: Cancel button. Confirm #1705

app/views/tree/edit.html.haml

@@ -5,8 +5,6 @@
         %i.icon-file
         %span.file_name
           = "#{@tree.path.force_encoding('utf-8')} (#{@ref})"
-        %span.options
-          = link_to "cancel editing", project_tree_path(@project, @id), class: "btn very_small"
       .file_content.code
         #editor= @tree.data
 
@@ -18,6 +16,7 @@
       = hidden_field_tag 'last_commit', @last_commit
       = hidden_field_tag 'content', '', :id => :file_content
       = button_tag "Commit", class: 'btn save-btn'
+      = link_to "Cancel", project_tree_path(@project, @id), class: "btn cancel-btn", confirm: "Are you sure?"
 
 :javascript
   var editor = ace.edit("editor");