Fix Perish Song volatile tag

Fix Perish Song being shown more than once if the attack is repeated in subsequent turns.
added js/client-rooms.js
Merge pull request #34 from sandshrewz/master

Update with js/client-rooms.js
Type changes aren't Baton Passed
Minor visual changes to room add page
Ladders now show top 500
Confusion is Baton Passed.
Ladder shows top 500 now
Merge pull request #33 from Joimer/patch-5

Fix Perish Song volatile tag
Ladder: Function to lear a ladder
Voices can now be ignored
/ignore now affects PMs in lobby log
Fix crash
More generic downtime message
More generalizable room join code
Normal size for join room panel
Support + button on all servers
Update formats-data to move Landorus to Uber.
Preparing client for triple battles: Team Preview
Edit the client so it acts correctly in triples and the team preview lets you choose three Pokémon.
Merge pull request #35 from Joimer/master

Preparing client for triple battles: Team Preview