Merge branch 'fixes-new-layout' into 'master'

Fixes new layout

* fix empty project page
* fix commit -> builds page missing margin

See merge request !2440

app/views/projects/commit/builds.html.haml

 - page_title "Builds", "#{@commit.title} (#{@commit.short_id})", "Commits"
 = render "projects/commits/header_title"
-= render "commit_box"
+.prepend-top-default
+  = render "commit_box"
 = render "ci_menu"
 
 = render "builds"

app/views/projects/empty.html.haml

+- @no_container = true
+
 = content_for :flash_message do
   - if current_user && can?(current_user, :download_code, @project)
     = render 'shared/no_ssh'
@@ -17,6 +19,7 @@
       file to this project.
 
 - if can?(current_user, :download_code, @project)
+  %div{ class: container_class }
     .prepend-top-20
     .empty_wrapper
       %h3.page-title-empty