Create the audible_message() proc to replace most instance of " for(var/mob/M in hearers(...)   show_message(..., 2)"

fixing typos and missing emotes in emote lists.
One more hearers replacement.
Fixing issue where people can't hear their own emotes while inside lockers and the audible messages when also in the dark. Removing object_talk() proc (obsolete).
Replacing two audible_message() by say().
Fixing two small mistakes.
Gives changelings 10 power points, rebalances ability chemical costs, and fixes two bugs and a typo.
whoops, hivemind should cost 2
Adding say_quote() to library console and supply computers.
...and to ordercomp as well
Undoes slight nerf changes that weren't really needed.
Drops blind sting and both shriek powers to 1 point, drops chitin armor cost by 5
Simplifying audible_message proc by using get_hearers_in_view().
Fixes some erros in the database system
Replaces erro_ with a configurable table prefix system
Defaults to erro_ if not configured, but configuation files default to SS13_
Defaults to no prefix now.
Also fixes a few things i forgot (like actually changing the schema)
Adds all the new stuff back again, PR issues.
Missing define.
Adds some missing drone things from the previous PR:
 +Missing head/mask slot because drones.dm is not currently being compiled
 +Missing weapon/storage not allowing drones to MouseDrop
 +Missing uplink buy() preventing non-humans to use it
 +Missing syndrone sprites

Adds new drone things that weren't in the previous PR:
 +Drone pings respect factions
 +Moved drone ping message functionality into its own proc
 +Alerts all drones about newly activated/reactivated drones
 +Alerts all drones about dead drones
 +Gives the syndrone the "syndicate" faction, overriding the default "neutral"
 ->Redirected gib() to dust()
 ->Redirected update_inv_l_hand() to update_inv_hands()
 ->Redirected update_inv_r_hand() to update_inv_hands()
 ->Redirected update_inv_wear_mask() to update_inv_head()
Adds the eletropack to the radio controller objects, so they work again.
Merge pull request #6 from JJRcop/droneimprove-restore

Adds some missing drone things from the previous PR/new drone things
Removed database specifications since this is handled by connecting to a database context.
This should fix some runtimes only downstream server providers were getting because their database isn't named test (default is feedback
Doubles the amount of TC and the prices of uplink items.
Stealthy items have been slightly decreased in price.
Weapons have been slightly increased in price.
Nuke items remain mostly unchanged.
Adds a changelog.