Changed collapsed assignee tooltip to users name

Fixes tooltip when updating the assignee

Closes #19280 #19281

app/assets/javascripts/users_select.js.coffee

@@ -56,6 +56,11 @@ class @UsersSelect
               username: ''
               avatar: ''
           $value.html(assigneeTemplate(user))
+
+          $collapsedSidebar
+            .attr('title', user.name)
+            .tooltip('fixTitle')
+
           $collapsedSidebar.html(collapsedAssigneeTemplate(user))
@@ -63,7 +68,6 @@ class @UsersSelect
         '<% if( avatar ) { %>
         <a class="author_link" href="/u/<%- username %>">
           <img width="24" class="avatar avatar-inline s24" alt="" src="<%- avatar %>">
-          <span class="author">Toni Boehm</span>
         </a>
         <% } else { %>
         <i class="fa fa-user"></i>

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

@@ -19,7 +19,7 @@
     = form_for [@project.namespace.becomes(Namespace), @project, issuable], remote: true, format: :json, html: {class: 'issuable-context-form inline-update js-issuable-update'} do |f|
       .block.assignee
-        .sidebar-collapsed-icon.sidebar-collapsed-user{data: {toggle: "tooltip", placement: "left", container: "body"}, title: (issuable.assignee.to_reference if issuable.assignee)}
+        .sidebar-collapsed-icon.sidebar-collapsed-user{data: {toggle: "tooltip", placement: "left", container: "body"}, title: (issuable.assignee.name if issuable.assignee)}
           - if issuable.assignee
             = link_to_member(@project, issuable.assignee, size: 24)
           - else