Add keyboard shortcuts to main menu.

1. Show shortcuts for easy navigation.

app/assets/javascripts/shortcuts.js

@@ -19,6 +19,45 @@
           return _this.focusFilter(e);
         };
       })(this));
+      function gotoMenu(menu){
+        if($('.global-dropdown.open').length) {
+          window.location.href = $('.global-dropdown-menu .dashboard-shortcuts-'+menu).attr('href');
+        }
+      }
+
+      Mousetrap.bind('m', function() {
+        $('.global-dropdown-menu').addClass('shortcuts')
+        $('.global-dropdown-toggle').trigger('click');
+      });
+
+      Mousetrap.bind('P', function() {
+        gotoMenu('projects');
+      });
+
+      Mousetrap.bind('A', function() {
+        gotoMenu('activity');
+      });
+
+      Mousetrap.bind('G', function() {
+        gotoMenu('groups');
+      });
+
+      Mousetrap.bind('L', function() {
+        gotoMenu('milestones');
+      });
+
+      Mousetrap.bind('I', function() {
+        gotoMenu('issues');
+      });
+
+      Mousetrap.bind('M', function() {
+        gotoMenu('merge_requests');
+      });
+
+      Mousetrap.bind('S', function() {
+        gotoMenu('snippets');
+      });
+
       Mousetrap.bind(['ctrl+shift+p', 'command+shift+p'], this.toggleMarkdownPreview);
       if (typeof findFileURL !== "undefined" && findFileURL !== null) {
         Mousetrap.bind('t', function() {

app/assets/stylesheets/framework/dropdowns.scss

@@ -187,6 +187,33 @@
     }
   }
 
+  .kbd {
+    display: none;
+  }
+
+  &.shortcuts span{
+    display: inline-block;
+    width: 140px;
+  }
+
+  &.shortcuts .kbd {
+    display: inline-block;
+    padding: 3px 5px;
+    font-size: 11px;
+    line-height: 10px;
+    color: #555;
+    vertical-align: middle;
+    background-color: #fcfcfc;
+    border-width: 1px;
+    border-style: solid;
+    border-color: #ccc #ccc #bbb;
+    border-image: none;
+    border-radius: 3px;
+    box-shadow: 0 -1px 0 #bbb inset;
+    width: 21px;
+    text-align: center;
+  }
+
   ul {
     margin: 0;
     padding: 0;

app/views/layouts/nav/_dashboard.html.haml

@@ -3,37 +3,51 @@
     = link_to dashboard_projects_path, title: 'Projects', class: 'dashboard-shortcuts-projects' do
       %span
         Projects
+      .kbd
+        P
   = nav_link(path: 'dashboard#activity') do
     = link_to activity_dashboard_path, class: 'dashboard-shortcuts-activity', title: 'Activity' do
       %span
         Activity
+      .kbd
+        A
   - if koding_enabled?
     = nav_link(controller: :koding) do
       = link_to koding_path, title: 'Koding' do
         %span
           Koding
   = nav_link(controller: [:groups, 'groups/milestones', 'groups/group_members']) do
-    = link_to dashboard_groups_path, title: 'Groups' do
+    = link_to dashboard_groups_path, class: 'dashboard-shortcuts-groups', title: 'Groups' do
       %span
         Groups
+      .kbd
+        G
   = nav_link(controller: 'dashboard/milestones') do
-    = link_to dashboard_milestones_path, title: 'Milestones' do
+    = link_to dashboard_milestones_path, class: 'dashboard-shortcuts-milestones', title: 'Milestones' do
       %span
         Milestones
+      .kbd
+        L
   = nav_link(path: 'dashboard#issues') do
     = link_to assigned_issues_dashboard_path, title: 'Issues', class: 'dashboard-shortcuts-issues' do
       %span
         Issues
       .badge= number_with_delimiter(cached_assigned_issuables_count(current_user, :issues, :opened))
+      .kbd
+        I
   = nav_link(path: 'dashboard#merge_requests') do
     = link_to assigned_mrs_dashboard_path, title: 'Merge Requests', class: 'dashboard-shortcuts-merge_requests' do
       %span
         Merge Requests
       .badge= number_with_delimiter(cached_assigned_issuables_count(current_user, :merge_requests, :opened))
+      .kbd
+        M
   = nav_link(controller: 'dashboard/snippets') do
-    = link_to dashboard_snippets_path, title: 'Snippets' do
+    = link_to dashboard_snippets_path, class: 'dashboard-shortcuts-snippets', title: 'Snippets' do
       %span
         Snippets
+      .kbd
+        S
   %li.divider
   %li
     = link_to "Help", help_path, title: 'About GitLab CE', class: 'about-gitlab'