existing folders and existing repos should not use the same set of...

existing folders and existing repos should not use the same set of instructions - pushing an existing repo into gitlab using the previous instructions would result in loss (at the gitlab remote end) of exist branches and tags.   so lets push those!

app/views/projects/empty.html.haml

@@ -44,7 +44,7 @@
               git push -u origin master
 
         %fieldset
-          %h5 Existing folder or Git repository
+          %h5 Existing folder 
           %pre.light-well
             :preserve
               cd existing_folder
@@ -54,6 +54,15 @@
               git commit
               git push -u origin master
 
+        %fieldset
+          %h5 Existing Git repository
+          %pre.light-well
+            :preserve
+              cd existing_repo
+              git remote add origin #{ content_tag(:span, default_url_to_repo, class: 'clone')}
+              git push -u origin --all
+              git push -u origin --tags
+
           - if can? current_user, :remove_project, @project
             .prepend-top-20
               = link_to 'Remove project', [@project.namespace.becomes(Namespace), @project], data: { confirm: remove_project_message(@project)}, method: :delete, class: "btn btn-remove pull-right"