Removed tabs, and use a separate screen instead. Some more refactoring
to make remember-me a global setting.
Merge branch 'new_login' of github.com:supertuxkart/stk-code into new_login
small patch for --no-graphics mode
Merge branch 'master' of https://github.com/supertuxkart/stk-code into properties
added check for --no-graphics argument
fix issue #1328
Merge pull request #1325 from solistice/properties

small patch for --no-graphics mode and small bug fix
Disabled guest account.
Fixed crash when local user name is empty.
Merge remote-tracking branch 'origin/master' into new_login

Conflicts:
	src/karts/controller/skidding_ai.cpp