-Tweaked cameras based on feedback!

It takes no time to open camera panels now.
There's no chance that pulsing a wire will set the alarm off.
Properly killed the camera from processing, if it isn't a motion camera.
Added some extra feedback to welding.
EMPing cameras will set their alarms off, if it passes the first prob check.

Updated the changelog.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4613 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/mob/living/silicon/ai/ai.dm

@@ -440,10 +440,10 @@
 /mob/living/silicon/ai/proc/switchCamera(var/obj/machinery/camera/C)
 
 	src.cameraFollow = null
-	if (!C || stat == 2 || !C.can_use())
-		//machine = null
-		//reset_view(null)
+
+	if (!C || stat == 2) //C.can_use())
 		return 0
+
 	if(!src.eyeobj)
 		core()
 		return