Fixes the undefined icon resulting in this:

Fixes the two buttons being misaligned with the UI.
Fixes double-clicking inside the AI PiP room teleporting the AI Eye out to the room and completely breaking the view. Do note that double-clicking no longer works at all inside the multi-cam room, as a tradeoff for completely preventing UI breaks.
Removes ability of the AI to see borg cameras when they are away from the station (no UFO spying)
Also removes borg ability to mess with doors on UFO (aliennn technologyyy)
* Polaris initial plane upstream merge
* POLARIS: Fix RIG visors with new plane system, and material scanner VIS_FULLBRIGHT
* POLARIS: Fix GetFlatIcon so that cameras and id pictures don't show the HUD overlays.
* POLARIS: Adds a 'alter values' proc for plane master ease of tweaking
Setting stuff like colorblindness variety and things.
* Remove NIF reference, fix lighting layer define
* Handle effects above lighting plane
* Moved all layer defines to planes+layers.dm
* Fixed overlays that are supposed to be above lighting to use the PLANE_LIGHTING_ABOVE
* Merge: 3000% human/update_icons() speed improvement
* Merge: Avoid ghosts pointing at things
* Creating new objects is cheap, in fact comparable to the cost of getting it out of the pool, so it doesn't help there.
* Placing items in the pool is far more expensive than letting them garbage collect due to the resetting of vars and such.
``/mob/dead/observer`` -> ``/mob/observer/dead``
``/mob/eye`` -> ``/mob/observer/eye``
Reason being that they are similar in that they both don't interact with
the world in any way. Some procs were shared, some checks as well, and
it overall makes more sense this way. Plus, there were no ``/mob/dead``
mobs.
- Fixes few typos in the code
- Fixes AI Eye object being solid, therefore being able to block movement of other players.
- Fixes non-station APCs boosting CPU as others.
Implemented Suggestions
+ Selection is now done in slightly better way (Basic Encryption Hack, Hack/Unlock Cyborg, Hack AI). Only relevant entities are offered in the list.
+ Adds varedit-modifiable variables for CPU Gain and Storage boost. These variables may be used by admin in game or by tester to faster unlock abilities.
+ Slightly nerfed APC CPU power generation.
+ Reworked machine overload. Now it only works on machines which are powered. Unpowered or broken machines cannot be overloaded. /obj/machinery/power type machines (APCs, SMESs, overall most stuff that directly handles electricity) received bonus explosion strength to compensate. Machine overload also drains massive power from local APC, therefore preventing spam of this ability (normal APC should take about 2-3 of these before needing to recharge). Also, qdel instead of del.
+ System Override now uses shuffled list of APCs when hacking them, as opposed to alphabetical list.
+ CPU generation rate is now shown in Status tab.