Merge branch 'file-mode-changed' into 'master'

Show file mode changes on commit page

## Before:

![Screenshot 2014-06-14 22.55.18](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/3f89dfa841/Screenshot_2014-06-14_22.55.18.png)

## After:

![Screenshot 2014-06-14 22.54.11](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/5e7550d595/Screenshot_2014-06-14_22.54.11.png)

Gemfile.lock

@@ -164,7 +164,7 @@ GEM
       multi_json
     gitlab-grack (2.0.0.pre)
       rack (~> 1.5.1)
-    gitlab-grit (2.6.8)
+    gitlab-grit (2.6.9)
       charlock_holmes (~> 0.6)
       diff-lcs (~> 1.1)
       mime-types (~> 1.15)

app/assets/stylesheets/sections/diff.scss

@@ -11,7 +11,6 @@
 
     > span {
       font-family: $monospace_font;
-      font-size: 14px;
       line-height: 2;
     }
 
@@ -19,9 +18,7 @@
       float: right;
 
       .btn {
-        background-color: #EEE;
-        color: #666;
-        font-weight: bolder;
+        background-color: #FFF;
       }
     }
 
@@ -32,6 +29,7 @@
 
     .file-mode {
       font-family: $monospace_font;
+      margin-left: 10px;
     }
   }
   .diff-content {
@@ -51,6 +49,11 @@
       }
     }
 
+    .file-mode-changed {
+      padding: 10px;
+      color: #777;
+    }
+
     table {
       width: 100%;
       font-family: $monospace_font;

app/helpers/commits_helper.rb

@@ -216,4 +216,8 @@ module CommitsHelper
       link_to(text.html_safe, user_path(user), options)
     end
   end
+
+  def diff_file_mode_changed?(diff)
+    diff.a_mode && diff.b_mode && diff.a_mode != diff.b_mode
+  end
 end

app/views/projects/commits/_diffs.html.haml

@@ -42,7 +42,6 @@
 .files
   - unless @suppress_diff
     - diffs.each_with_index do |diff, i|
-      - next if diff.diff.empty?
       - file = project.repository.blob_at(@commit.id, diff.new_path)
       - file = project.repository.blob_at(@commit.parent_id, diff.old_path) unless file
       - next unless file
@@ -58,7 +57,7 @@
                   %span.commit-short-id= @commit.short_id(6)
           - else
             %span= diff.new_path
-            - if diff.a_mode && diff.b_mode && diff.a_mode != diff.b_mode
+            - if diff_file_mode_changed?(diff)
               %span.file-mode= "#{diff.a_mode} → #{diff.b_mode}"
 
             .diff-btn-group

app/views/projects/commits/_text_file.html.haml

@@ -22,3 +22,6 @@
       - unless comments.empty?
         = render "projects/notes/diff_notes_with_reply", notes: comments, line: line
 
+- if diff.diff.blank? && diff_file_mode_changed?(diff)
+  .file-mode-changed
+    File mode changed