Tells cut by comma help message and /blocktells.

targets[1].trim() is unnecessary and does nothing really needed or anything, and I added a help message for more than or equal to 2 targets in tell. Also added /ignoretells if you don't want like 5 random messages popping up, spamming your screen when you talk...
Merge pull request #83 from macrarazy/patch-5

Tells cut by comma help message and /blocktells.