fixed problems in public user page. Paging, some components not updating, crash in tabRede when user not logged in and overlapping in activities

just commiting one thing that i used in tests and forgot to remove, just in case this version goes live

fixed anchor bug and added a logic to scroll to the top when user enters in some tab  of the help or  about

added a loading screen after login to prevent the user changing pages if not loaded, avoiding status 401 errors

Fixed responsiveness of some items in Editar Perfil page, links to request professor account, professor account form and other minnor things