On second login redirect to previous page

Added (Admin side):
 - Redirect to previous edited page (If session ended or unauthorized
access received)
View for notice about ended session

Added:
 - View for Ajax request
Redirect instead of make view on ended session or unauthorized access

Changes:
 - Applied to most of controllers
Login controller improvements

Added:
 - Support for redirect only to previously edited page
 - Separate Views support for Ajax and standart requests
 - Routes: Support for new features at login controller