added AT government SAML profile attributes
added a bit ot text
changed message text for improved failure experience
changed message text for improved failure experience; removed unused get_eptid()
Merge pull request #124 from rhoerbe/master

added AT government attribute map; + some cosmetics
Merge pull request #125 from tpazderka/identity_database_as_instance

Allow usage of external IdentDB instance
Merge pull request #126 from tpazderka/encoding_error_soap

Fixed encoding error in _use_soap
Fixed set_cookie max-age parsing

Max-age is expected to be in seconds and thus cannot be parsed by _since_epoch.
Expire attribute is calculated from now() and max-age