Produits Entr'ouvert » Mandaye

backends: complete rewrite of the interface

The old interface was to specific for sqlalchemy this new one allow to
write new backends

WARNING: this commit could break compability for some filter which uses
the old interface

authform: fix local_logout and improve replay relative uri management

local_logout: don't change cookie path when mandaye delete it

mandaye/auth/saml2.py: json module return unicode string so I need to cast them

saml2: prefix new configuration arguments with saml2

saml2: render saml END POINTS settable in vhost configuration(s)

authform: improve relative replay url (add get management)

replay: fix relative url post in login form

saml2: add all endpoints by default

saml2: simplify local logout