* Connections: redirects to data sources
If Data sources page is the only child of Your connections, then the
NavLandingPage doesn't really make sense.
* DataSourcesList: do not show add button twice
If there are no data sources configured, then the DataSourcesList page
shows a large CTA to add a data source. Therefore, the add new data
source button in the header is redundant, let's remove it from there
in this case.
* DataSources: redirect to Connections after delete
The primary place of the DataSourceList page is under Connections,
provided that the `dataConnectionsConsole` feature is turned on.
Therefore, let's redirect there after deleting a data source.
* fix: use case-sensitive routes for Connections
The reason to do this is to have the backend route-guards work properly.
(The backend route guards are case-sensitive, thus if the FE would serve
the case-insensitive version, then the backend route guards could be bypassed.)
* tests: update the tests
* fix: use the correct URL for editing datasource dashboards
* feat: show the Datasource/Dashboards page under Connections as well
* refactor: remove unnecessary `useNavModel()` utility
* feat: add a utility for creating the nav-model for DS settings tabs
* refactor: use nav-model crating utility in Edit Datasource
* feat: add a new modal for displaying no-access info
* feat(CardGrid): add an onClick handler for items
* feat: open a no-access modal when clicking on a connection in the catlog
* feat: update permissions
Open a "No access" modal when the user clicks a connection type but has no permissions creating a datasource out of it
* test: add tests for opening the No Access modal
* test: fix the user permissions in tests
* Wip
* Revert "Wip"
This reverts commit 7f080c7f77.
* feat(Connections): create sub-pages wrapped by `<Page>`
* feat(Connections): rename the Connections page and update routes
* feat(Connections): use new url for editing datasources
* refactor(Connections): remove unused tab components
* feat(Connections): update routes and nav titles
* tests: fix tests for Connections
* tests: fix typo in backend tests
