Bring file lock button back into UI

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/projects/blob/_actions.html.haml

-- if @environment
-  .btn-group<
-    = view_on_environment_button(@commit.sha, @path, @environment)
-
-.btn-group{ role: "group" }<
-  = link_to 'Raw', namespace_project_raw_path(@project.namespace, @project, @id),
-      class: 'btn btn-sm', target: '_blank'
-  -# only show normal/blame view links for text files
-  - if blob_text_viewable?(@blob)
-    - if current_page? namespace_project_blame_path(@project.namespace, @project, @id)
-      = link_to 'Normal View', namespace_project_blob_path(@project.namespace, @project, @id),
-          class: 'btn btn-sm'
-    - else
-      = link_to 'Blame', namespace_project_blame_path(@project.namespace, @project, @id),
-          class: 'btn btn-sm js-blob-blame-link' unless @blob.empty?
-  = link_to 'History', namespace_project_commits_path(@project.namespace, @project, @id),
-      class: 'btn btn-sm'
-  = link_to 'Permalink', namespace_project_blob_path(@project.namespace, @project,
-      tree_join(@commit.sha, @path)), class: 'btn btn-sm js-data-file-blob-permalink-url'
-
-- if current_user
-  .btn-group{ role: "group" }<
-    = lock_file_link(html_options: {class: 'btn btn-sm path-lock'})
-    - if blob_text_viewable?(@blob)
-      = edit_blob_link
-    = replace_blob_link
-    = delete_blob_link
-
-- if license_allows_file_locks?
-  :javascript
-    PathLocks.init(
-      '#{toggle_namespace_project_path_locks_path(@project.namespace, @project)}',
-      '#{@path}'
-    );

app/views/projects/blob/_header.html.haml

@@ -34,6 +34,14 @@
 
     - if current_user
       .btn-group{ role: "group" }<
+        = lock_file_link(html_options: {class: 'btn btn-sm path-lock'})
         = edit_blob_link if blob_text_viewable?(blob)
         = replace_blob_link
         = delete_blob_link
+
+- if license_allows_file_locks?
+  :javascript
+    PathLocks.init(
+      '#{toggle_namespace_project_path_locks_path(@project.namespace, @project)}',
+      '#{@path}'
+    );