Feat/protect users endpoint

It's set to draft just to check and test if this covers wanted behavior

fixes https://open.greenhost.net/stackspin/dashboard-backend/-/issues/38 #57 (closed) #72 (closed)

Added calls to /me endpoint for personal information updates, app access section is grayed out if selected dashboard role is admin for the user. Removed call to /users after personal info update.

Check with https://open.greenhost.net/stackspin/dashboard-backend/-/tree/feat/protect-users-endpoint backend branch.