The orange week in the month calendar reflects current week

In the last release the orange week was changed to be the current week (in the real
calendar), this commit puts it back to be the week displayed in the calendar.

Adjust the unit-tests also so make them a little more easier to debug in the future

Fixes https://fedorahosted.org/fedocal/ticket/110
Merge pull request #106 from fedora-infra/monthly_cal_week

The orange week in the month calendar reflects current week