fix: use localStorage for storing access token/refresh token
Created by: xkureck
- storing tokens is moved from session storage to local storage because session storage is storing the data only for one tab, but we want to share tokens across multiple tabs
- refreshing token is now only triggered when access token is expired
- expiration of tokens was moved from 0.75(default) to random number from 0.5 to 0.75 so the refreshing of the token is not triggered by multiple tabs at the same time
- sidemenu items url links members applications and groups fixed