Use Gitlab::Git:: for git features across application

app/views/blame/show.html.haml

@@ -6,7 +6,7 @@
       %i.icon-angle-right
       = link_to project_tree_path(@project, @ref) do
         = @project.name
-    - @tree.breadcrumbs(6) do |link|
+    - tree_breadcrumbs(@tree, 6) do |link|
       \/
       %li= link
   .clear

app/views/compare/show.html.haml

@@ -16,7 +16,7 @@
   %div.ui-box
     %h5.title
       Commits (#{@commits.count})
-    %ul.well-list= render @commits
+    %ul.well-list= render Commit.decorate(@commits)
 
   - unless @diffs.empty?
     %h4 Diff

app/views/wikis/show.html.haml

@@ -13,5 +13,4 @@
     = preserve do
       = render_wiki_content(@wiki)
 
-- commit = Commit.new(@wiki.version)
-%p.time Last edited by #{commit_author_link(commit, avatar: true, size: 16)} #{time_ago_in_words @wiki.created_at} ago
+%p.time Last edited by #{commit_author_link(@wiki.version, avatar: true, size: 16)} #{time_ago_in_words @wiki.created_at} ago