[battlearena.py] Orb tracking + bar items
[battlearena.py] Orb tracking + bar items

First steps taken to keep track of your orb count. So far it parses the !orb response as well as the end-of-battle red orb reward.
Also updated the known battlers list.
Added helper methods for sending messages to the bot.
Finally, added the first two bar items: battlearena_orbs and battlearena_current_weapon.

FiXato/weechat_scripts