Update /help command

Show /forcerenameto only on ~ now that it has its own permission not given to leaders by default.
Fix small bug on /help forcetie, which had === instead of = so matched was not found.
Merge pull request #244 from Joimer/patch-21

Update /help command
Fix bug in muting?
Implement basic anti-spamming mechanism
Basic anti-spam function only applies to the lobby
International-friendly anti-spam function
Gen III: Preliminary status fixes.
Tweak phrasing 'due to inactivity'
Added /weakness command
Merge pull request #247 from moraesfire/master

Added /weak command
Gen III: Fix up formats-data.
Suppress a crash when a user leaves during a switch
Send |unlink| message when banning user
NEXT: No need for weird spacing in README anymore
(The weird spacing was previously there to work around a GitHub
markdown rendering bug, but they appear to have fixed it now.)
NEXT: More clarification on how signature Pokemon work
Fixed /weakness types.id
Merge pull request #248 from moraesfire/master

Fixed /weakness type.id output
Fix a crash in /forcewin.
Improve stale assertion error message
Gen V: Display Abilities swapped by Skill Swap.