Changed user selection when creating a new project so that deselection is possible and noone is selected more than once [RS, EW]

Changed delete_user to remove dependencies in other tables. Added variable in forloop in get_projects_for_user for clarity [RS, EW]

Added all projects registry, modified access to that only admin can edit/delete other users, only admin can add new users, added labels for required fields [IK]

Filter relevant project-user assignments in the python backend and assigned users now are shown in the project landing page

Removed unnecessary comments, getting post error for second post request we try to do when adding a project assignment [RS, EW]

Isolated project id using await and async. Now trying to post the project assignment to relevant database [RS, EW]

Tried to connect frontend to backend, returning project id via a dummy json. Not working yet [RS, EW]

Tried changing database to link adding user functionality to the backend. Not fully there yet [RS, EW]

This reverts commit da63679f.

[IK, BG]