Replace links in navigation

Includes:
- removing all styling of those links
  outside of GOV.UK Frontend (except for a few fixes
  due to their interaction with our design)
- bringing together some duplicate styles into one
  block
- changing how links are marked as selected, now
  they have multiple classes

Fix Sass-lint error in navigation.scss

app/templates/main_nav.html

@@ -5,32 +5,32 @@
   <ul>
   {% if current_user.has_permissions() %}
     {% if current_user.has_permissions('view_activity') %}
-      <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.service_dashboard', service_id=current_service.id) }}" {{ main_navigation.is_selected('dashboard') }}>Dashboard</a></li>
+      <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('dashboard') }}" href="{{ url_for('.service_dashboard', service_id=current_service.id) }}">Dashboard</a></li>
     {% endif %}
-    <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.choose_template', service_id=current_service.id) }}" {{ main_navigation.is_selected('templates') }}>Templates</a></li>
+    <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('templates') }}" href="{{ url_for('.choose_template', service_id=current_service.id) }}">Templates</a></li>
     {% if current_user.has_permissions('view_activity') %}
       {% if current_service.can_upload_letters %}
-        <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('main.uploads', service_id=current_service.id) }}" {{ main_navigation.is_selected('uploads') }}>Uploads</a></li>
+        <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('uploads') }}" href="{{ url_for('main.uploads', service_id=current_service.id) }}">Uploads</a></li>
       {% endif %}
     {% else %}
-      <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.view_notifications', service_id=current_service.id, status='sending,delivered,failed') }}" {{ casework_navigation.is_selected('sent-messages') }}>Sent messages</a></li>
+      <li><a class="govuk-link govuk-link--no-visited-state{{ casework_navigation.is_selected('sent-messages') }}" href="{{ url_for('.view_notifications', service_id=current_service.id, status='sending,delivered,failed') }}">Sent messages</a></li>
       {% if current_service.has_jobs or current_service.can_upload_letters %}
-        <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('main.uploads', service_id=current_service.id) }}" {{ casework_navigation.is_selected('uploads') }}>Uploads</a></li>
+        <li><a class="govuk-link govuk-link--no-visited-state{{ casework_navigation.is_selected('uploads') }}" href="{{ url_for('main.uploads', service_id=current_service.id) }}">Uploads</a></li>
       {% endif %}
     {% endif %}
-    <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.manage_users', service_id=current_service.id) }}" {{ main_navigation.is_selected('team-members') }}>Team members</a></li>
+    <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('team-members') }}" href="{{ url_for('.manage_users', service_id=current_service.id) }}">Team members</a></li>
     {% if current_user.has_permissions('manage_service', allow_org_user=True) %}
-      <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.usage', service_id=current_service.id) }}" {{ main_navigation.is_selected('usage') }}>Usage</a></li>
+      <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('usage') }}" href="{{ url_for('.usage', service_id=current_service.id) }}">Usage</a></li>
     {% endif %}
     {% if current_user.has_permissions('manage_api_keys', 'manage_service') %}
-      <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.service_settings', service_id=current_service.id) }}" {{ main_navigation.is_selected('settings') }}>Settings</a></li>
+      <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('settings') }}" href="{{ url_for('.service_settings', service_id=current_service.id) }}">Settings</a></li>
     {% endif %}
     {% if current_user.has_permissions('manage_api_keys') %}
-      <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.api_integration', service_id=current_service.id) }}" {{ main_navigation.is_selected('api-integration') }}>API integration</a></li>
+      <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('api-integration') }}" href="{{ url_for('.api_integration', service_id=current_service.id) }}">API integration</a></li>
     {% endif %}
   {% elif current_user.has_permissions(allow_org_user=True) %}
-    <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.usage', service_id=current_service.id) }}" {{ main_navigation.is_selected('usage') }}>Usage</a></li>
-    <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.manage_users', service_id=current_service.id) }}" {{ main_navigation.is_selected('team-members') }}>Team members</a></li>
+    <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('usage') }}" href="{{ url_for('.usage', service_id=current_service.id) }}">Usage</a></li>
+    <li><a class="govuk-link govuk-link--no-visited-state{{ main_navigation.is_selected('team-members') }}" href="{{ url_for('.manage_users', service_id=current_service.id) }}">Team members</a></li>
   {% endif %}
   </ul>
 </nav>

app/templates/org_nav.html

@@ -1,10 +1,10 @@
 <nav class="navigation">
   <ul>
-  	<li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.organisation_dashboard', org_id=current_org.id) }}" {{ org_navigation.is_selected('dashboard') }}>Usage</a></li>
-    <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.manage_org_users', org_id=current_org.id) }}" {{ org_navigation.is_selected('team-members') }}>Team members</a></li>
+    <li><a class="govuk-link govuk-link--no-visited-state{{ org_navigation.is_selected('dashboard') }}" href="{{ url_for('.organisation_dashboard', org_id=current_org.id) }}">Usage</a></li>
+    <li><a class="govuk-link govuk-link--no-visited-state{{ org_navigation.is_selected('team-members') }}" href="{{ url_for('.manage_org_users', org_id=current_org.id) }}">Team members</a></li>
     {% if current_user.platform_admin %}
-    <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.organisation_settings', org_id=current_org.id) }}" {{ org_navigation.is_selected('settings') }}>Settings</a></li>
-    <li><a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('.organisation_trial_mode_services', org_id=current_org.id) }}" {{ org_navigation.is_selected('trial-services') }}>Trial mode services</a></li>
+    <li><a class="govuk-link govuk-link--no-visited-state{{ org_navigation.is_selected('settings') }}" href="{{ url_for('.organisation_settings', org_id=current_org.id) }}">Settings</a></li>
+    <li><a class="govuk-link govuk-link--no-visited-state{{ org_navigation.is_selected('trial-services') }}" href="{{ url_for('.organisation_trial_mode_services', org_id=current_org.id) }}">Trial mode services</a></li>
     {% endif %}
   </ul>
 </nav>

app/templates/org_template.html

@@ -10,7 +10,7 @@
       {% if current_user.platform_admin %}
         <a href="{{ url_for('.organisations') }}" class="govuk-link govuk-link--no-visited-state navigation-organisation-link">All organisations</a>
       {% endif %}
-      <div class="navigation-service-name">
+      <div class="navigation-service-name govuk-!-font-weight-bold">
         {{ current_org.name }}
       </div>
       <a href="{{ url_for('main.choose_account') }}" class="govuk-link govuk-link--no-visited-state navigation-service-switch">Switch service</a>

app/templates/views/organisations/index.html

@@ -11,7 +11,7 @@
 {% block maincolumn_content %}
 
     <div class="navigation-service">
-      <div class="navigation-service-name">
+      <div class="navigation-service-name govuk-!-font-weight-bold">
         &nbsp;
       </div>
       <a href="{{ url_for('main.choose_account') }}" class="govuk-link govuk-link--no-visited-state navigation-service-switch">Switch service</a>

app/templates/withnav_template.html

@@ -15,7 +15,7 @@
           <a href="{{ url_for('.organisation_dashboard', org_id=current_service.organisation_id) }}" class="govuk-link govuk-link--no-visited-state navigation-organisation-link">{{ current_service.organisation.name }}</a>
         {% endif %}
       {% endif %}
-      <div class="navigation-service-name">
+      <div class="navigation-service-name govuk-!-font-weight-bold">
         {{ current_service.name }}
       </div>
       <a href="{{ url_for('main.choose_account') }}" class="govuk-link govuk-link--no-visited-state navigation-service-switch">Switch service</a>