Map Update

-Redid the HoP office (https://dl.dropboxusercontent.com/u/831776/hopdop2.png)
-Added more walls to the north side of the AI chamber to plug up the holes you could stand in to hide from the turrets
-Added another table in the prison wing to make it easier to see the items
-Replaced loose tools in armory with a single toolbox
-Replaced electric chair in abandoned satellite with an electropack
-Added a little bit more fluff on centcom
-Tweaked engineering maint a little bit so the camera would no longer be able to see into the dead end
-Added missing multitool to atmos
Re-electrified Admin Office grille

Removed some excess machinery from centcom
-Fixed mining dock door being all-access
-Added a darker floor for the HoP office to make it stand out more.
-Replaced a bunch of computers on centcom with fake structures
-Replaced some dead-end doors on centcom with fake turfs. Muh fourth wall!
Reverted changes to HoP office by https://github.com/tgstation/-tg-station/pull/767

The maint has been made more useful by swapping around some r-walls
https://dl.dropboxusercontent.com/u/831776/hopdop3.png
Merge pull request #869 from Ikarrus/mapdoot

Map Update