This should not have any effect on how the thing looks and
behaves.
* All elements in the sidebar should be reachable with the tab
key, including disabled elements.
* Enter jumps to the corresponding paremeter in the content
area on the right. But enter doesn't change the checkbox
state.
* Space canges the checkbox.
The class will be renamed in the next patch.
Bug: T285323
Change-Id: Idc5e04828ece0ba77a65e4c839cd3ffccc3b6733
This not really just a checkbox widget anymore it inherits from
FieldLayout and became something more in that direction.
Let's use a mixture of these things to make it a bit clearer.
See also comment in Ie81b84be288553343017c4aaf8691c4e266995f5
Change-Id: Iff1746a8e5e94b56eb6c27465405aaf6b74c2310