* It's now possible to set actions/options for groups.
* In "Add Group" view, selectable devices are limited by the group options -
you can only group devices with the same set of options.
* You can set and remove options/actions from within the group overview
* The dropdowns in the grouped overview will now only show the toggle options if the group/type has the specified option. By that, it is easier to define additional options later
* Added a "View Group/Room/Gateway" link in the grouped overview dropdown
* Corrected a array to string conversion bug in the api wrapper

Issue #10