Added ujson support.
Changed all imports to import from Mamba json which uses ujson if available.
Merge pull request #78 from nicholasamorim/ujson

Now we import from Ujson always that is available
fixed typo in _package admin script
Errors thrown via errback being logged properly now.
routing tree fixed
fixed tests for routing
Merge pull request #82 from DamnWidget/better_routing_system

Better routing system
Now a param in request.kwargs is only a list if is really a list coming.
Merge pull request #83 from nicholasamorim/request_kwargs_fix

Now a param in request.kwargs is only a list if is really a list coming.
Merge pull request #80 from nicholasamorim/fix_error_log

Errors thrown via errback being logged properly now.
fixed PEP8 violation in config.py
removed PyPy specific imports from postgres.py adaptor as it is being handled in the parent scope of database.py
fixed postgres _shell not passing password to command
support for multiple database connections from a single mamba application, allow even to use different databases for different models
Merge pull request #84 from DamnWidget/master

Support for multiple database connections, resolved #76
fixed admin_script tests
disable slow command line tests by default
added mamba_database tests
fixed type in controller.rst documentation