Merge branch 'dz-cleanup-counters' into 'master'

Remove counters from Pipeline navigation

* counters are heavy from UI perspective
* duplicates information from tabs below
* shows 0 for less active projects. Jumps from 0 to N constantly. 

I think we should render counters only when necessary and only for filters ( tabs on white bg ).  Exception:  issues, merge requests in top navigation as status of project popularity and action required from maintainers 


cc @grzesiek @ayufan @jschatz1 

See merge request !4617

app/views/projects/pipelines/_head.html.haml

@@ -5,11 +5,9 @@
         = link_to project_pipelines_path(@project), title: 'Pipelines', class: 'shortcuts-pipelines' do
           %span
             Pipelines
-            %span.badge.count.ci_counter= number_with_delimiter(@project.pipelines.running_or_pending.count)
 
     - if project_nav_tab? :builds
       = nav_link(controller: %w(builds)) do
         = link_to project_builds_path(@project), title: 'Builds', class: 'shortcuts-builds' do
           %span
             Builds
-            %span.badge.count.builds_counter= number_with_delimiter(@project.running_or_pending_build_count)