Add case to split on numbers to turnovers.py

Some interceptions and fumbles end with the yardline where the recovery
was made. We now properly split on these.
Update rosters with missing players

Fixed several players:
- "Ted Ginn" has had "Ted Ginn Jr." added.
- "Bill Lafleur" has had "Bill LaFleur" added.
Add handling of turnovers on onside kicks