Link to usage, not dashboard

Organisation team members only have access to the dashboard if they’re
also a member of that service.

They always have access to the usage page, so let’s link there instead.

tests/app/main/views/organisations/test_organisation.py

@@ -72,7 +72,7 @@ def test_view_organisation_shows_the_correct_organisation(
         org_id=ORGANISATION_ID,
     )
 
-    assert normalize_spaces(page.select_one('h1').text) == 'Services'
+    assert normalize_spaces(page.select_one('h1').text) == 'Usage'
 
 
 def test_create_new_organisation(
@@ -121,8 +121,8 @@ def test_organisation_services_shows_live_services_only(
 
     assert normalize_spaces(services[0].text) == '1'
     assert normalize_spaces(services[1].text) == '5'
-    assert services[0].find('a')['href'] == url_for('main.service_dashboard', service_id=SERVICE_ONE_ID)
-    assert services[1].find('a')['href'] == url_for('main.service_dashboard', service_id=SERVICE_TWO_ID)
+    assert services[0].find('a')['href'] == url_for('main.usage', service_id=SERVICE_ONE_ID)
+    assert services[1].find('a')['href'] == url_for('main.usage', service_id=SERVICE_TWO_ID)
 
 
 def test_organisation_trial_mode_services_shows_all_non_live_services(

tests/app/test_navigation.py

@@ -130,7 +130,7 @@ def test_a_page_should_nave_selected_header_navigation_item(
 
 
 @pytest.mark.parametrize('endpoint, selected_nav_item', [
-    ('main.organisation_dashboard', 'Services'),
+    ('main.organisation_dashboard', 'Usage'),
     ('main.manage_org_users', 'Team members'),
 ])
 def test_a_page_should_nave_selected_org_navigation_item(