Added support for Address. Need to do it in a better way, now it is in a simple way, need to write the whole address

added support for saving data in the database. Added cf zone index to database. Now need to fix all exceptions

already reading DB. Problem: what do we do with the data? We should create the necessary crazyfly zones, in the exact position?

Rework in CFZones. When we remove now, everything OK, we unlink perfectly, we dont change the names... Getting some crashes when we close tabs. Need to fix

restructuration in LINKER. Need to see if everything goes OK. Need to unlink, need to remove options, etc..

Added table. Need to take care of everything else, like unlink, impossible to add same student id twice, remove added elements from choices....