Several fixes in tools and docs.

run_pep8 is now works correctly with venvs;
docs updated to point to the stackforge repo.

Change-Id: Ieddc29d3020e09a52b0b8fc5a7ad68086aaa8cee
sample-conf command added to savanna-manage

Change-Id: Id72022c6a144feab82a0b68d79c42ff60fc6e15a
savanna-manage added to the scripts section of setup.py

Change-Id: Ic9aa7baf2bf5a33697d6e297a6f15753912d44ed
Exec permissions added to the savanna-manage command.

Change-Id: I718073f250b0c4019bd9a43c721e7ff771790feb
resources has been added to sdist tarball

Change-Id: I4e5b2ecb5b78e6750b161e78632cf31660f613ed