[MP] Fix #382 - force regen bug with saber throw

The debounce time was not being updated when the saber was being thrown.
This meant that after the saber had returned, the force points were
regenerated as if it started from the point the saber was thrown.
[MP] Clean up forcepowers validation
[MP] Fix spectators getting stuck with force grip movement speed. Clean up some bg_pmove stuff.
[MP] Adjusted name filtering. Don't allow control characters, fix @@@ filtering
[MP] Meta: Remove unnecessary comments and names
Merge branch 'master' of https://github.com/JACoders/OpenJK