cleanup readme
add screenshot
typo
small enhancement
kind and unit are required for channels
configure log level via config.yaml, now disabled for tests
Add test for channel api
started to implement first data-api tests
Add more data-api test
fixed issue with test on travis
small fix, if value is not send as number
fixed some linter warnings
Update to bootstrap 3.1
Option to disable channels
Option to activate/hide channels on creation
moved "add channel" from the menu to the end of the channel list
little clean up
removed linter warnings