mls.py: Update soup to match MLS redesign
mls.py: Update soup to match MLS redesign

They changed the tables:
 * New class
 * New psuedo header
 * Columns shifted

It's playoff season, we need to pop the indicator off the club name.

The clubs are no longer linked so we don't have to .find(a) anymore.

michaelwnelson/mls-standings-scraper