Hide operations icon in small screens

In small screens operations icon is visible and also present
in More menu. This commit cleans up the More menu for small
screens and also shows and hides nav links appropriately
based on screen sizes

Cleaned up title attrs in dashboard

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

@@ -19,17 +19,17 @@
 
   - if dashboard_nav_link?(:activity)
     = nav_link(path: 'dashboard#activity', html_options: { class: ["d-none d-xl-block", ("d-lg-block" unless has_extra_nav_icons?)] }) do
-      = link_to activity_dashboard_path, class: 'dashboard-shortcuts-activity', title: _('Activity') do
+      = link_to activity_dashboard_path, class: 'dashboard-shortcuts-activity' do
         = _('Activity')
 
   - if dashboard_nav_link?(:milestones)
     = nav_link(controller: 'dashboard/milestones', html_options: { class: ["d-none d-xl-block", ("d-lg-block" unless has_extra_nav_icons?)] }) do
-      = link_to dashboard_milestones_path, class: 'dashboard-shortcuts-milestones', title: _('Milestones') do
+      = link_to dashboard_milestones_path, class: 'dashboard-shortcuts-milestones' do
         = _('Milestones')
 
   - if dashboard_nav_link?(:snippets)
     = nav_link(controller: 'dashboard/snippets', html_options: { class: ["d-none d-xl-block", ("d-lg-block" unless has_extra_nav_icons?)] }) do
-      = link_to dashboard_snippets_path, class: 'dashboard-shortcuts-snippets qa-snippets-link', title: _('Snippets') do
+      = link_to dashboard_snippets_path, class: 'dashboard-shortcuts-snippets qa-snippets-link' do
         = _('Snippets')
 
   - if any_dashboard_nav_link?([:groups, :milestones, :activity, :snippets])
@@ -41,47 +41,47 @@
         %ul
           - if dashboard_nav_link?(:activity)
             = nav_link(path: 'dashboard#activity') do
-              = link_to activity_dashboard_path, title: _('Activity') do
+              = link_to activity_dashboard_path do
                 = _('Activity')
 
           - if dashboard_nav_link?(:milestones)
             = nav_link(controller: 'dashboard/milestones') do
-              = link_to dashboard_milestones_path, class: 'dashboard-shortcuts-milestones', title: _('Milestones') do
+              = link_to dashboard_milestones_path, class: 'dashboard-shortcuts-milestones' do
                 = _('Milestones')
 
           - if dashboard_nav_link?(:snippets)
             = nav_link(controller: 'dashboard/snippets') do
-              = link_to dashboard_snippets_path, class: 'dashboard-shortcuts-snippets', title: _('Snippets') do
+              = link_to dashboard_snippets_path, class: 'dashboard-shortcuts-snippets' do
                 = _('Snippets')
-
-          = render_if_exists 'dashboard/operations/nav_link'
+          %li.dropdown.d-lg-none
+            = render_if_exists 'dashboard/operations/nav_link_list'
           - if can?(current_user, :read_instance_statistics)
-            = nav_link(controller: [:conversational_development_index, :cohorts]) do
-              = link_to instance_statistics_root_path, title: _('Instance Statistics'), aria: { label: _('Instance Statistics') }, data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do
+            = nav_link(controller: [:conversational_development_index, :cohorts], html_options: { class: 'd-lg-none' }) do
+              = link_to instance_statistics_root_path do
                 = _('Instance Statistics')
           - if current_user.admin?
             = nav_link(controller: 'admin/dashboard') do
-              = link_to admin_root_path, class: 'admin-icon qa-admin-area-link', title: _('Admin Area'), aria: { label: _('Admin Area') }, data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do
+              = link_to admin_root_path, class: 'd-lg-none admin-icon qa-admin-area-link' do
                 = _('Admin Area')
           - if Gitlab::Sherlock.enabled?
             %li
-              = link_to sherlock_transactions_path, class: 'admin-icon', title: _('Sherlock Transactions'),
-                data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do
+              = link_to sherlock_transactions_path, class: 'd-lg-none admin-icon' do
                 = _('Sherlock Transactions')
 
   -# Shortcut to Dashboard > Projects
   - if dashboard_nav_link?(:projects)
     %li.hidden
-      = link_to dashboard_projects_path, title: _('Projects'), class: 'dashboard-shortcuts-projects' do
+      = link_to dashboard_projects_path, class: 'dashboard-shortcuts-projects' do
         = _('Projects')
 
   - if current_controller?('ide')
     %li.line-separator.d-none.d-sm-block
       = nav_link(controller: 'ide') do
-        = link_to '#', class: 'dashboard-shortcuts-web-ide', title: _('Web IDE') do
+        = link_to '#', class: 'dashboard-shortcuts-web-ide' do
           = _('Web IDE')
 
-  = render_if_exists 'dashboard/operations/nav_link'
+  %li.dropdown{ class: 'd-none d-lg-block' }
+    = render_if_exists 'dashboard/operations/nav_link'
   - if can?(current_user, :read_instance_statistics)
     = nav_link(controller: [:conversational_development_index, :cohorts], html_options: { class: "d-none d-lg-block d-xl-block"}) do
       = link_to instance_statistics_root_path, title: _('Instance Statistics'), aria: { label: _('Instance Statistics') }, data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do