Add Swedish 'fika' (3PM) as valid input for time

At work in Sweden we often fika (coffee+buns and what have u) at 3PM. I sometimes accidentally give a start time of 'teatime', so when I return from 'fika' I see my job's just getting started. This fix should make life even easier for the Swedes.
Merge pull request #47 from inodb/patch-1

Add Swedish 'fika' (3PM) as valid input for time