Send websocket signal close connection
received signal type close, close websocket
send categories list on websocket
close websocket if send event type `close`
Used websocket signal 'categories' on chart init
used categories event type on filter chart
Clean getNestedProp
Fix exist categories (used in chart element) field
Merge pull request #39 from yupbank/master

add settings.py and unite both ming and admin and the bin tool
remove white line on settings file
remove import not used
Fix bug on load fields element cube
fix make environment, ref #38
add riak/memcached on travis-ci services
add setup install mining source
fix pep8 in admin views
fix bug run mining tests
Add coverage report on make test
refactoring mining load chart
create Filter include html