Merge branch 'improve-search-ux' into 'master'

Improve search ux

When I use search from merge requests page I usually want to see merge requests results. If I do search from wiki pages -> I want to see wiki results first.

With this patch search scope is set to issues if you are on issues controller and same for merge requests and wikis

See merge request !1290

app/views/layouts/_search.html.haml

@@ -4,7 +4,16 @@
     = hidden_field_tag :group_id, @group.try(:id)
     - if @project && @project.persisted?
       = hidden_field_tag :project_id, @project.id
+
+      - if current_controller?(:issues)
+        = hidden_field_tag :scope, 'issues'
+      - elsif current_controller?(:merge_requests)
+        = hidden_field_tag :scope, 'merge_requests'
+      - elsif current_controller?(:wikis)
+        = hidden_field_tag :scope, 'wiki_blobs'
+      - else
         = hidden_field_tag :search_code, true
+
     - if @snippet || @snippets
       = hidden_field_tag :snippets, true
     = hidden_field_tag :repository_ref, @ref

app/views/search/_project_filter.html.haml

@@ -25,6 +25,7 @@
         = @search_results.notes_count
   %li{class: ("active" if @scope == 'wiki_blobs')}
     = link_to search_filter_path(scope: 'wiki_blobs') do
+      %i.fa.fa-book
       Wiki
       .pull-right
         = @search_results.wiki_blobs_count