Incorrect handling for LOGOUT_URL

[SunilMohanAdapa]

Django's LOGIN_URL etc. settings can be absolute paths or named URLs. In stronghold, LOGOUT_URL is always treated as an absolute path. If someone provides a LOGOUT_URL value as user:logout. It gets translated to regular expression such ^user:logout$ to be matched against request.path_info.

Django itself handles these URLs with django.shortcuts.resolve_url which resolves both named URLs and absolute paths properly.