Fix warning messages for promoting labels and milestones

app/views/projects/milestones/show.html.haml

@@ -27,7 +27,7 @@
           Edit
 
         - if @project.group
-          = link_to promote_project_milestone_path(@milestone.project, @milestone), title: "Promote to Group Milestone", class: 'btn btn-grouped', data: { confirm: "You are about to promote #{@milestone.title} to a group level. This will make this milestone available to all projects inside #{@project.group.name}. The existing project milestone will be merged into the group level. This action cannot be reversed.", toggle: "tooltip" }, method: :post do
+          = link_to promote_project_milestone_path(@milestone.project, @milestone), title: "Promote to Group Milestone", class: 'btn btn-grouped', data: { confirm: "Promoting #{@milestone.title} will make it available for all projects inside #{@project.group.name}. Existing project milestones with the same name will be merged. This action cannot be reversed.", toggle: "tooltip" }, method: :post do
             Promote
 
         - if @milestone.active?

app/views/shared/_label.html.haml

@@ -48,7 +48,7 @@
 
   .pull-right.hidden-xs.hidden-sm
     - if label.is_a?(ProjectLabel) && label.project.group && can?(current_user, :admin_label, label.project.group)
-      = link_to promote_project_label_path(label.project, label), title: "Promote to Group Label", class: 'btn btn-transparent btn-action', data: {confirm: "You are about to promote #{label.title} to a group level. This will make this milestone available to all projects inside #{label.project.group.name}. The existing project label will be merged into the group level. This action cannot be reversed.", toggle: "tooltip"}, method: :post do
+      = link_to promote_project_label_path(label.project, label), title: "Promote to Group Label", class: 'btn btn-transparent btn-action', data: {confirm: "Promoting #{label.title} will make it available for all projects inside #{label.project.group.name}. Existing project labels with the same name will be merged. This action cannot be reversed.", toggle: "tooltip"}, method: :post do
         %span.sr-only Promote to Group
         = sprite_icon('level-up')
     - if can?(current_user, :admin_label, label)

app/views/shared/milestones/_milestone.html.haml

@@ -51,7 +51,7 @@
           \
 
           - if @project.group
-            = link_to promote_project_milestone_path(milestone.project, milestone), title: "Promote to Group Milestone", class: 'btn btn-xs btn-grouped', data: { confirm: "You are about to promote #{milestone.title} to a group level. This will make this milestone available to all projects inside #{@project.group.name}. The existing project milestone will be merged into the group level. This action cannot be reversed.", toggle: "tooltip" }, method: :post do
+            = link_to promote_project_milestone_path(milestone.project, milestone), title: "Promote to Group Milestone", class: 'btn btn-xs btn-grouped', data: { confirm: "Promoting #{milestone.title} will make it available for all projects inside #{@project.group.name}. Existing project milestones with the same name will be merged. This action cannot be reversed.", toggle: "tooltip" }, method: :post do
               Promote
 
           = link_to 'Close Milestone', project_milestone_path(@project, milestone, milestone: {state_event: :close }), method: :put, remote: true, class: "btn btn-xs btn-close btn-grouped"