- Implemented asynchronous storage based on the user storage on the backend.

… Remove the locale provider as it is no longer needed.

… membership.

…r immediately.

- Added a button (bottom left) to invalidate all data, i.e. refresh the current page.
- Clicking the already active menu item no longer refreshes, but rather clears the state, e.g. table filters (an action that was not possible before).

… elements were sometimes measured before mounted. Fixed some other related problems.

…additional line for selecting the client group if there are multiple. Select client group by default in separate mode.