The assumption that RHEL-6 and older don't have Jinja2 was incorrect;
just the package is named differently.  However, in many cases people
will still want small installs, so we're keeping the split, just the
note is rephrased to be more accurate.

RHEL6 and older call it python-jinja2, then it's called python2-jinja2.

Fixes #3.

Overview of changes:

 *  Fixed test discovery code

    Most of the code was broken; discovery by id, version printing...
    Now it's still embarrassingly slow, but at least it somewhat works.

 *  Updated MKit for jattool and test suites to v0.0.34

 *  Updated parser, Jinja templats and more for newer shellfu-bash-jat

 *  Added meaningful content to README.md

 *  Added support for showing test/suite version

 *  Changed 'jats' term to 'id' for jats:// test and suite ids

 *  Ensured proper test status from runtest matches qrun (and

 *  Split-off jattool-minimal for testing machines

 *  Changed jats: ids to use double-slash between suite part and test part

 *  Added error message if test has not finished cleanly

 *  Rewrote broken parts of test discovery and identification

 *  Codebase maintenance

Not very useful alone, but already good to read version of a test suite
or test, given that path is passed as well.

Needless to say, the HTML template is still horrible and needs someone
with better HTML/CSS skills.

The Python parser is still not really correct, but at least does not
depend on function names.

Keep jattool as meta-package for easy installations on workstations.

There's no way this would have worked properly; I don't know what I was
thinking of.