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

Signed-off-by: Cael_Aislinn <cael_aislinn@yahoo.com.au>
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