Further isolate tmf's core from the rest

No pun intended.

This commit is the starting point to carve tmf's core out of the
current monolithic piece of software.

It probably won't be piece of cake to deal with the fallback since
there are places in the code that I've not deleted that still reference
pieces that I have deleted.

A cursory inspection by @giuseppefutia, in any case, confirms that I
am on track and that I'm keeping only what needs to be kept.
Classifier.java: remove references to removed code

With a little help (really, a little!) from Eclipse, here is a
diff that removes all the references to removed code.

What remains in tree is the pure classifier of TellMeFirst.
Replace pom.xml with a stripped-down working pom.xml
pom.xml: more verbose compile process
.gitignore += more eclipse stuff
Merge pull request #3 from bassosimone/feature/slim_fast-v2

Remove code not belonging to tmf's core