Removed dependencies for registry
Executor and Cliche
Removing rabix-common

rabix-common package used to be installed on docker images alongside
tools and wrappers. As wrappers are now deprecated in favor of json
schemas/adapters this package is no longer neded.
requirements conflict resolve
tests and pep8 fixes
Removing old stuff, figuring houw to integrate new

So far checksum command can work with python 2 and 3. Next goal is to
move executors.cli run logic torabix.cli.
Merge branch 'feature/json-wrappers' of github.com:rabix/rabix into feature/json-wrappers

Conflicts:
	rabix/__init__.py

I'll try to figure out how to do without MAPPINGS global...
tests fixes, streaming outputs
Rabix build now works with new docker container
stdout, stderr, pipe test
metadata, python3 fixes
Imported Resources unavailable error
Using ref_resolver from cliche for calculating checksums

Fixing some python 2/3 compatibility issues too
Fixing pep8 issues, and Python 2/3 compatibility
Build fixes

calling make_config() on args passed from build file, using get_stdout
instead of print_logs, minor fixes.
Fixing some tests and muting others

Muted tests are mostly obsoleted, and will be removed (or fixed) after
closer analisys.
Run gets its own command

rabix is now just for running, and other commands are sub-commands
of a rabix-tool
tests, metadata, expressions
nottest tests that uses docker
test fix - path to files