Handle default stoplists more effectively

[senderle]

Currently, we do a weird thing with the default MALLET stoplist. You see, once you disable it, you can only bring it back by restarting the JVM. Don't ask me why! (Or figure out why, and tell me how, or what I'm doing wrong.)

The best answer to this problem is probably to have our own default stoplists packaged along with everything else required in the native apps. Someday!