/week dates should be Monday to Sunday (not Monday to Monday)

[Jens Petersen]

Currently "/report" says:

Week 35
August 25th 2014 to August 31st 2014

(ie Monday to Sunday)

but "/week/35/2014" says:

Week 35
August 25th 2014 to September 1st 2014

(ie Monday to Monday inclusive).

I think "/week/*" pages should also show dates Monday to Sunday like "/report".