Fixed robots having a low charge getting their equipment state and UI out of sync.
Parrot fixes
- Parrots will now reset to wander after being stuck for long enough.

- Attacking a parrot will no longer give the attacker a "you have nothing to drop" message, that was a typical 'usr' error, woops.

- Fixed some typos in the comments.. What? That's totally commit log material!
changelog update for ai tracking change, fixed typo

Signed-off-by: Cael_Aislinn <cael_aislinn@yahoo.com.au>
Merge pull request #223 from Tastyfish/master

Fixed the inventory UI glitch for borgs on low power
 * Fixes diseases using the data of the same reference, meaning disease data won't overwrite everything.
 * Created a new reagent proc called on_new(). It will be called after a disease is created in add_reagent().
 * Made vaccines copy the data they use, instead of referencing it.
Merge pull request #305 from Giacomand/ViroFix

Disease Fix
Merge pull request #303 from caelaislinn/master

Changelog update for AI tracking change
Moves the copy/pasted code into a function.
Merge pull request #302 from Nodrak/parrot_fixes

Parrot fixes