Merge pull request #785 from kotarou3/tournaments

Fix crash when accepting/cancelling tournament challenges before a tournament has started
Merge pull request #786 from kotarou3/bugfix

Disable HTML in /weak
Change Dark/Fairy Aura boost to 1.33x
Prevent Chesto Berry with Hydration + Rain Dance
Prevent Snow Warning Nature Power Aurorus
Initial RU banlist

Smogon announcement forthcoming
Make dexsearch return nothing on impossible search

If someone uses "dexsearch scald, !scald" it should automatically return no Pokemon found, as the statement is always false and nothing can match that criteria.
Make dexsearch return nothing on impossible search

Same reasoning as before, with all parameters
Merge pull request #787 from Relados/patch-41

Prevent Chesto Berry with Hydration + Rain Dance
Merge pull request #788 from Relados/patch-42

Prevent Snow Warning Nature Power Aurorus
Merge pull request #789 from Relados/patch-43

Make dexsearch return nothing on impossible search
Add RU (beta) format
Fix grammar in /tour help
Update Pokemon tiers to specify UU
Support UU in /dexsearch
Update the OMotM to Ability Shift
Merge pull request #792 from TalkTakesTime/patch-2

Update the OMotM to Ability Shift
Consistent return format for /dexsearch
Also adds error messages for searches of type "!x, x", instead of just returning a nothing found message
Merge pull request #793 from TalkTakesTime/patch-3

Consistent return format for /dexsearch + other updates
Correct section for Alphabet Cup

woops