Better Picarto.tv

Better Picarto.tv aka BPTV.

Features include:
* Nickname completion (TAB hotkey)
* Emote completion (TAB hotkey)
* Last whisper hotkey (SHIFT + UP hotkey)
* Previous message history (UP/DOWN hotkey)
* Notify on moderator actions (Ban/SB, Kick, Unban, ClearUser)
* Optionally limit history
* Username highlighting
* Show deleted messages
* Disable chat clears, and see which moderator issued it
* User helper modal to aid moderator tasks
* 'Mimi' emote name rollover
* Some small CSS tweaks