Merge pull request #10 from mam10dfd/master

Semesterplan
Remove .idea
Adding relationship between Modul and FieldOfStudy.
Making Modul.field many to many rel.
Updated admin.
Adding weeknumber field.
Changed weeknumber.
bug fix.
Update parsers.py
Merge pull request #13 from proewer/proewer

Update parsers.py
Updating Event.weeknumber.
Updating ifiws13 parser.

Moduls withou a number are ignored.
modul selection for plan
Merge pull request #16 from riddlore/master

modul selection for plan
Some style changes.
Fix for  Issue #17.
Adding admin link to menubar.
adding events to selected moduls @plan
minor fix
Merge https://github.com/riddlore/InterTime #18