Scraping is now a little more intelligent

Instead of spelling out which days a route drives the scraper tries all
days (weekdays, saturdays and sundays) and ignores the ones without
schedule.

The scraper also scrapes the "holidays" now seperately so we have the
schedule for 24th and 31st of december.
Updated API for new DB schema

The API now returns actual dates instead of just 'weekday' or 'sunday'.
It also takes the holidays into account, displaying a separate schedule
for 24th and 31st of december and no schedule for 25th of december and
1st of january.