removed debug string, bumped event intervals, decreased probability of some events

Signed-off-by: Cael_Aislinn <cael_aislinn@yahoo.com.au>
Non-animated runes aren't being cached, probably a bug.
Merge pull request #2386 from Uristqwerty/master

Non-animated runes not cached.
replaced infestation slimes with spiderlings (with 0% chance to grow into giant spiders), reduced spiderling noisiness, made them less jittery (easier to squish)

Signed-off-by: Cael_Aislinn <cael_aislinn@yahoo.com.au>
Merge pull request #2378 from caelaislinn/master

Remove debug string
Merge pull request #2387 from comma/master

 Fixes issue #2384
Fixed infinite loop in powernet rebuild.

If a /obj/machinery/power wasn't anchored, it wouldn't get a new list of connections, so would endlessly loop on the old list, of which that object was the first entry, ensuring that the loop would never terminate.
Merge pull request #2390 from Uristqwerty/master

Fixed infinite loop in powernet rebuild. (Issue #2385)
Fixes events being broken.

The proc to get active playercounts was utterly broken, which led to there only being events that needed no specific requirements. Fixed, and made events more common(the only reason people were pissed about so many events was that only the annoying ones would spawn ever).
Merge pull request #2392 from CIB/master

Fixes random events
Added a single positronic brain to R&D.
Merge pull request #2398 from Zuhayr/master

Mapchange: positronic brain added to R&D.
Side indicator on targeting dolly.
Fixes #2441