Adding dropdown for users

app/assets/javascripts/users_select.js.coffee

@@ -71,6 +71,8 @@ class @UsersSelect
             Issues.filterResults $dropdown.closest('form')
           else if $dropdown.hasClass 'js-filter-submit'
             $dropdown.closest('form').submit()
+          else
+            console.log 'else'
         renderRow: (user) ->
           username = if user.username then "@#{user.username}" else ""
           avatar = if user.avatar_url then user.avatar_url else false

app/views/shared/issuable/_sidebar.html.haml

@@ -42,7 +42,7 @@
             .light None
 
         .selectbox.hide-collapsed
-          = users_select_tag("#{issuable.class.table_name.singularize}[assignee_id]", placeholder: 'Select assignee', class: 'custom-form-control js-select2 js-assignee', selected: issuable.assignee_id, project: @target_project, null_user: true, current_user: true, first_user: true)
+          = dropdown_tag("Select assignee", options: { toggle_class: "js-user-search js-author-search", title: "Filter by user", filter: true, dropdown_class: "dropdown-menu-user dropdown-menu-selectable dropdown-menu-author", placeholder: "Search users", data: { first_user: (current_user.username if current_user), current_user: true, project_id: (@project.id if @project), selected: params[:author_id], field_name: "author_id" } })
 
       .block.milestone
         .sidebar-collapsed-icon