Grouping / ungrouping of scenes through API

[roehligas]

The current documentation provides functions to group and to ungroup scenes.

The grouping makes sense straight away, but for the ungrouping I'm missing a function that gives me the list of groups to choose from.

ungroup_scenes requires an integer as input. If it was a String i would expect it to be the name of the group.

For scenes themselves you can request a list of all scene names. Shouldn't there be a mapping function for scene groups aswell?