Make options label clickable

[bjarnef]

Use for attribute on label + id attribute on checkbo (ensure it is unique, so it not might conflct when other property editors in core or by other developers). Or simple wrap the label around the checkbox.

Maybe also for "Page Title", "Meta Description" and "URL Name" so it set focus on input (like in core) - at the moment e.g. input for title is missing a id="title" as the label has for="title".. however title is probably not unique enough.