Merge pull request #69 from nikicat/master

fix: replace python-coveralls with coveralls
README: added coveralls.io and PyPi badges
setup.py: Removed GnsBuild
Merge pull request #72 from mdevaev/removed-gns-build

setup.py: Removed GnsBuild
Issue #64: using --config and yaml !include instead of --config-dir
*.conf -> *.yaml
Removed const.RULES_DIR and const.CONFIG_FILE
Comment about gns/api_.py
Removed const_site.py
Removed gns.const
Merge pull request #71 from mdevaev/issue-64-yaml-include

Issue #64: using --config and yaml !include instead of --config-dir
Again fixed leaking in API
api: removed __main__ logic, added make_wsgi_app() ref to gns.api_
Merge pull request #73 from mdevaev/api-fix

WSGI api fixes
gitignored ./rules and ./rules.git
Dockerfile refactoring
fetcher: periodical fetching
make service.init_logging public
added maestro-ng configs
added etc/gns-maestro.d