Chat Gags

# Bug Fixes
- Fixed a bug where using /msg and variants would not have converted the final word
- Fixed a bug where all filtered messages would have a leading space

# Changes
## Commands
- The gag set command now takes a name in all lowercase, and replaces spaces with hyphens
- /msg and variants used to gag someone else now have case-insensitive gag names
- /msg and variants used to gag someone else now have case-insensitive checks for the word "gag"

## Miscellaneous
- Removed some debug Logger calls from reloading your resource packs