Tidy tooltip_title and fix dropdown open left

app/helpers/labels_helper.rb

@@ -211,14 +211,12 @@ module LabelsHelper
     end
   end
 
-  def label_status_tooltip(status)
-    return '' unless status
+  def label_status_tooltip(label, status)
+    type = label.is_a?(ProjectLabel) ? 'project' : 'group'
+    level = status.unsubscribed? ? type : status.sub('-level', '')
+    action = status.unsubscribed? ? 'Subscribe' : 'Unsubscribe'
 
-    if status.unsubscribed?
-      "Subscribe at #{label.is_a?(ProjectLabel) ? 'project' : 'group'} level"
-    else
-      "Unsubscribe at #{status.sub('-', ' ')}"
-    end
+    "#{action} at #{level} level"
   end
 
   # Required for Banzai::Filter::LabelReferenceFilter

app/views/shared/_label.html.haml

@@ -6,7 +6,7 @@
 - toggle_subscription_path = toggle_subscription_label_path(label, @project) if current_user
 - show_label_merge_requests_link = show_label_issuables_link?(label, :merge_requests, project: @project)
 - show_label_issues_link = show_label_issuables_link?(label, :issues, project: @project)
-- tooltip_title = label_status_tooltip(status)
+- tooltip_title = label_status_tooltip(label, status) if status
 
 %li.label-list-item{ id: label_css_id, data: { id: label.id } }
   = render "shared/label_row", label: label, subject: subject, force_priority: force_priority
@@ -29,7 +29,7 @@
       .dropdown
         %button{ type: 'button', class: 'btn btn-transparent js-label-options-dropdown label-action', data: { toggle: 'dropdown' } }
           = sprite_icon('ellipsis_v')
-        .dropdown-menu.dropdown-menu-align-right
+        .dropdown-menu.dropdown-open-left
           %ul
             - if label.is_a?(ProjectLabel) && label.project.group && can?(current_user, :admin_label, label.project.group)
               %li
@@ -55,7 +55,7 @@
               %span
                 = _('Subscribe')
                 = sprite_icon('chevron-down')
-            .dropdown-menu.dropdown-menu-align-right
+            .dropdown-menu.dropdown-open-left
               %ul
                 %li
                   %button.js-subscribe-button.label-subscribe-button.btn.btn-default{ class: ('hidden' unless status.unsubscribed?), data: { status: status, url: toggle_subscription_project_label_path(@project, label) } }