Enables the "cult" investigation

Exactly as the name says. Makes use of all the investigate_log in place for cult
Missed tags

Apparantly missed the controller tags on the north east solar airlock
controller
Revert "Virology Update"

This reverts commit 16a9025ef15de7818768e6eb1ab2fd6390f1c000.

Conflicts:
	code/modules/virus2/effect.dm
Merge pull request #326 from IcyV/investigate

Enables the "cult" investigation
Merge pull request #327 from Bram961/master

Missed tags
Recoded wall-smoothing for optimization.  Fixes #835.

Conflicts:
	code/game/smoothwall.dm
	code/game/turfs/simulated/walls.dm
	code/modules/power/singularity/singularity.dm
Merge branch 'master' of https://github.com/ZomgPonies/Paradise
Merge pull request #317 from ZomgPonies/master

Patch