Add bottom margin to nav-tabs

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/gl_bootstrap.scss

@@ -108,6 +108,8 @@ $pagination-active-bg: $bg_style_color;
 // Nav tabs
 .nav.nav-tabs {
+  margin-bottom: 15px;
+
   li {
     > a {
       padding: 8px 20px;

app/assets/stylesheets/sections/dashboard.scss

@@ -41,7 +41,7 @@
 .dash-sidebar-tabs {
   margin-bottom: 2px;
   border: none;
-  margin: 0;
+  margin: 0 !important;
   li {
     &.active {

app/views/devise/sessions/new.html.haml

 .login-box
   %h3.page-title Sign in
   - if ldap_enabled?
-    %ul.nav.nav-tabs.append-bottom-20
+    %ul.nav.nav-tabs
       %li.active
         = link_to 'LDAP', '#tab-ldap', 'data-toggle' => 'tab'
       %li

app/views/projects/commits/_head.html.haml

-%ul.nav.nav-tabs.append-bottom-15
+%ul.nav.nav-tabs
   %li= render partial: 'shared/ref_switcher', locals: {destination: 'commits'}
   = nav_link(controller: [:commit, :commits]) do

app/views/projects/issues/_head.html.haml

-%ul.nav.nav-tabs.append-bottom-15
+%ul.nav.nav-tabs
   = nav_link(controller: :issues) do
     = link_to project_issues_path(@project), class: "tab" do
       Browse Issues

app/views/projects/merge_requests/_show.html.haml

@@ -12,7 +12,7 @@
   = render "projects/merge_requests/show/commits"
   - if @commits.present?
-    %ul.nav.nav-tabs.append-bottom-10
+    %ul.nav.nav-tabs
       %li.notes-tab{data: {action: 'notes'}}
         = link_to project_merge_request_path(@project, @merge_request) do
           %i.icon-comment

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

@@ -48,7 +48,7 @@
         = preserve do
           = markdown @milestone.description
-%ul.nav.nav-tabs.append-bottom-10
+%ul.nav.nav-tabs
   %li.active
     = link_to '#tab-issues', 'data-toggle' => 'tab' do
       Issues

app/views/projects/wikis/_nav.html.haml

-%ul.nav.nav-tabs.append-bottom-20
+%ul.nav.nav-tabs
   = nav_link(html_options: {class: params[:id] == 'home' ? 'active' : '' }) do
     = link_to 'Home', project_wiki_path(@project, :home)

app/views/search/_project_results.html.haml

-%ul.nav.nav-tabs.append-bottom-10
+%ul.nav.nav-tabs
   %li{class: ("active" if params[:search_code].present?)}
     = link_to search_path(params.merge(search_code: true)) do
       Repository Code