* IOT dashboard: Fix light display input
* move tolerance in mouse handlinge code
* Revert "move tolerance in mouse handlinge code"
This reverts commit 2214d2160fd4c37151f9f6451f06ce12f7b7dada.
We keep the tolerance handling inside the other function.
* IOT dashboard: Make light dimmer use arc renderer
* use shadow
* add value text
* add warm and cold parts
* add knob
* handle input
* only move knob when drawing along the arc
* improve input handling
* add tickmarks
* add tickmarks node
* clean up a bit
* Update screenshot of IOT dashboard for github site