Okupy/TODO mgorny

Week starting 15 Jul 2013

 * Support storing site permissions and SReg choices in the database,
 * Support Attribute Exchange equivalents of SReg data,
 * Add more fields to SReg as soon as the LDAPUser model is updated,
 * Fix redirect-after-login.

Other tasks
Initial testing can be done with the help of the OpenID-LDAP test on-line script (what a coincidence!).
 * Investigate the replay protection test failure.