* create page and sidebar entry

* add components for query editor and definition

* split pane things

* add reducer and action

* implement split pane and update ui actions

* making things pretty

* Unify toolbar

* minor tweak to title prefix and some padding

* can create definitions

* fix default state

* add notificaion channel

* add wrappers to get correct spacing between panes

* include or exclude description

* implement query editor

* start on query result component

* update from master

* some cleanup and remove expressions touch ups

Co-authored-by: Torkel Ödegaard <torkel@grafana.com>