add app description to manifest to support p2p distribution

This allows other methods of distributing APKs to also include the
description text, like the FDroid local repo swapping.
document jar sources

This .properties file is supported by the Android tools as a means to point
towards the javadoc for a given jar.  I've extended it to include a pointer
to the original download link and the source repo.
created class LilDebiAction which will create/start/stop Debian instead of class LilDebi
make-release-build: use git tools for more flexible cleaning
move jenkins build script to git
ignore = dirty in submodules