Merge pull request #2 from JonNatanael/master

Corrected db path
Merge pull request #1 from ipri2013/master

sync
adding main_db file
Merge pull request #3 from domc/master

added main_db file
Updated db.
Error pages 404,500
Merge pull request #4 from kknavs/master

Added error pages 404,500
Started work on user authentication and registration.