made filters use blanket update, not check/uncheck

Migrated current unchecked/checked system to a blanked update system.
Whenever a checkbox is check/unchecked, it adds/removes tag (if it's a
tag checkbox) and then simply blanked updates the gamePool and
removedPool.
- Note: Performance at worse case seems to be very good still. If
performance remains good on slower computers, this system will be kept
over old system. If performance is slower, may try to fix past version
instead.