Removed references to subscribe-button CSS class

These were being blocked by adblocks

Closes #15043

app/assets/javascripts/subscription.js.coffee

@@ -2,7 +2,7 @@ class @Subscription
   constructor: (container) ->
     $container = $(container)
     @url = $container.attr('data-url')
-    @subscribe_button = $container.find('.subscribe-button')
+    @subscribe_button = $container.find('.issuable-subscribe-button')
     @subscription_status = $container.find('.subscription-status')
     @subscribe_button.unbind('click').click(@toggleSubscription)
 

app/assets/stylesheets/pages/issuable.scss

@@ -173,12 +173,6 @@
     }
   }
 
-  .subscribe-button {
-    span {
-      margin-top: 0;
-    }
-  }
-
   &.right-sidebar-collapsed {
     /* Extra small devices (phones, less than 768px) */
     display: none;

app/assets/stylesheets/pages/labels.scss

@@ -106,7 +106,7 @@
       padding: 6px;
       color: $gl-text-color;
 
-      &.subscribe-button {
+      &.label-subscribe-button {
         padding-left: 0;
       }
     }

app/views/projects/labels/_label.html.haml

@@ -14,7 +14,7 @@
       .label-subscription{data: {url: toggle_subscription_namespace_project_label_path(@project.namespace, @project, label)}}
         .subscription-status{data: {status: label_subscription_status(label)}}
 
-        %a.subscribe-button.btn.action-buttons{data: {toggle: "tooltip"}}
+        %a.label-subscribe-button.btn.action-buttons{data: {toggle: "tooltip"}}
           %span= label_subscription_toggle_button_text(label)
 
     - if can? current_user, :admin_label, @project

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

@@ -128,7 +128,7 @@
           .title.hide-collapsed
             Notifications
           - subscribtion_status = subscribed ? 'subscribed' : 'unsubscribed'
-          %button.btn.btn-block.btn-gray.subscribe-button.hide-collapsed{:type => 'button'}
+          %button.btn.btn-block.btn-gray.issuable-subscribe-button.hide-collapsed{:type => 'button'}
             %span= subscribed ? 'Unsubscribe' : 'Subscribe'
           .subscription-status.hide-collapsed{data: {status: subscribtion_status}}
             .unsubscribed{class: ( 'hidden' if subscribed )}

features/steps/project/issues/issues.rb

@@ -20,11 +20,11 @@ class Spinach::Features::ProjectIssues < Spinach::FeatureSteps
   end
 
   step 'I should see that I am subscribed' do
-    expect(find('.subscribe-button span')).to have_content 'Unsubscribe'
+    expect(find('.issuable-subscribe-button span')).to have_content 'Unsubscribe'
   end
 
   step 'I should see that I am unsubscribed' do
-    expect(find('.subscribe-button span')).to have_content 'Subscribe'
+    expect(find('.issuable-subscribe-button span')).to have_content 'Subscribe'
   end
 
   step 'I click link "Closed"' do

features/steps/project/labels.rb

@@ -29,6 +29,6 @@ class Spinach::Features::Labels < Spinach::FeatureSteps
   private
 
   def subscribe_button
-    first('.subscribe-button span')
+    first('.label-subscribe-button span')
   end
 end

features/steps/project/merge_requests.rb

@@ -77,11 +77,11 @@ class Spinach::Features::ProjectMergeRequests < Spinach::FeatureSteps
   end
 
   step 'I should see that I am subscribed' do
-    expect(find('.subscribe-button span')).to have_content 'Unsubscribe'
+    expect(find('.issuable-subscribe-button span')).to have_content 'Unsubscribe'
   end
 
   step 'I should see that I am unsubscribed' do
-    expect(find('.subscribe-button span')).to have_content 'Subscribe'
+    expect(find('.issuable-subscribe-button span')).to have_content 'Subscribe'
   end
 
   step 'I click button "Unsubscribe"' do