Added empty booking page
Updated changelog
Added link from django user to person
Started getting week numbers and started grabbing active projects
Intermediary commit. Added year/week objects.
Added mgmt command to add those objects automatically.
Got tests running again
Proper year/week handling in the templates
Grabbing real worked hours per week
Shorter date format
Added more hour calculations.

Switched import style: 'from trs import models' isn't handy because
I also want to do 'from django.db import models' for 'models.Sum()'...
Listing persons working on projects and vice versa
Swapped 'wij' and 'overzichten'. Nicer that way.
Got booking to work
Added tabindex
Updated changelog
Merge pull request #2 from nens/reinout-booking

Got booking working