use STDERR consistently across git shell.

add safety-net error messages for ssh/git.

Load paths fixed Use bundler instead of hard coded paths. solves #665

remove strange working_copy.pies config-entry.

Remove unnecessary OntohubConfig and refactor.

move git logger into init file Also fix the requirement of being in the directory of the file, when loading init.rb.

One step more towards SSH access

git shell and git hooks added