Remove the `has_bottom_tooltip` class

Bootstrap's tooltip JS can read the placement from a `data-placement`
attribute.

Further, when we supply the `selector` option to `tooltip`, tooltips
will be added to any dynamically-added elements matching the selector,
without us having to re-call the `tooltip` method.

app/assets/javascripts/application.js.coffee

@@ -132,10 +132,9 @@ $ ->
     ), 1
 
   # Initialize tooltips
-  $('.has_tooltip').tooltip()
-
-  # Bottom tooltip
-  $('.has_bottom_tooltip').tooltip(placement: 'bottom')
+  $('body').tooltip({
+    selector: '.has_tooltip, [data-toggle="tooltip"]'
+  })
 
   # Form submitter
   $('.trigger-submit').on 'change', ->

app/views/layouts/_head_panel.html.haml

@@ -2,7 +2,7 @@
   .navbar-inner
     .container
       %div.app_logo
-        = link_to root_path, class: 'home has_bottom_tooltip', title: 'Dashboard' do
+        = link_to root_path, class: 'home', title: 'Dashboard', data: {toggle: 'tooltip', placement: 'bottom'} do
           = brand_header_logo
           %h3 GitLab
       %h1.title= title
@@ -16,33 +16,33 @@
           %li.hidden-sm.hidden-xs
             = render 'layouts/search'
           %li.visible-sm.visible-xs
-            = link_to search_path, title: 'Search', class: 'has_bottom_tooltip' do
+            = link_to search_path, title: 'Search', data: {toggle: 'tooltip', placement: 'bottom'} do
               = icon('search')
           %li
-            = link_to help_path, title: 'Help', class: 'has_bottom_tooltip' do
+            = link_to help_path, title: 'Help', data: {toggle: 'tooltip', placement: 'bottom'} do
               = icon('question-circle')
           %li
-            = link_to explore_root_path, title: 'Explore', class: 'has_bottom_tooltip' do
+            = link_to explore_root_path, title: 'Explore', data: {toggle: 'tooltip', placement: 'bottom'} do
               = icon('globe')
           %li
-            = link_to user_snippets_path(current_user), title: 'Your snippets', class: 'has_bottom_tooltip' do
+            = link_to user_snippets_path(current_user), title: 'Your snippets', data: {toggle: 'tooltip', placement: 'bottom'} do
               = icon('clipboard')
           - if current_user.is_admin?
             %li
-              = link_to admin_root_path, title: 'Admin area', class: 'has_bottom_tooltip' do
+              = link_to admin_root_path, title: 'Admin area', data: {toggle: 'tooltip', placement: 'bottom'} do
                 = icon('cogs')
           - if current_user.can_create_project?
             %li
-              = link_to new_project_path, title: 'New project', class: 'has_bottom_tooltip' do
+              = link_to new_project_path, title: 'New project', data: {toggle: 'tooltip', placement: 'bottom'} do
                 = icon('plus')
           %li
-            = link_to profile_path, title: 'Profile settings', class: 'has_bottom_tooltip' do
+            = link_to profile_path, title: 'Profile settings', data: {toggle: 'tooltip', placement: 'bottom'} do
               = icon('user')
           %li
-            = link_to destroy_user_session_path, class: 'logout', method: :delete, title: 'Sign out', class: 'has_bottom_tooltip' do
+            = link_to destroy_user_session_path, class: 'logout', method: :delete, title: 'Sign out', data: {toggle: 'tooltip', placement: 'bottom'} do
               = icon('sign-out')
           %li.hidden-xs
-            = link_to current_user, class: 'profile-pic has_bottom_tooltip', id: 'profile-pic' do
+            = link_to current_user, class: 'profile-pic', id: 'profile-pic', data: {toggle: 'tooltip', placement: 'bottom'} do
               = image_tag avatar_icon(current_user.email, 60), alt: 'User activity'
 
 = render 'shared/outdated_browser'

app/views/profiles/update.js.erb

@@ -4,6 +4,3 @@ $('body').addClass('<%= app_theme %> <%= theme_type %>')
 
 // Re-render the header to reflect the new theme
 $('header').html('<%= escape_javascript(render("layouts/head_panel", title: "Profile")) %>')
-
-// Re-initialize header tooltips
-$('.has_bottom_tooltip').tooltip({placement: 'bottom'})