Merge pull request #1 from ipri2013/master

Updating my fork
Working on parsers and auth
made some changes to data.models (not sure if correct)
user authentication with parsing timetable and updating database
should work now(of course can't test it on windows...), data models
fixed, offer app added
Merge pull request #37 from nejc92/master

user authentication with parsing timetable and updating database should work now(of course can't test it on windows...), data models fixed, offer app added