Sorry for comment 4, mid-aired :)
(In reply to :Matthias Kammüller from comment #3)
Marking with a single click and editing with a double click sounds very confusing.
The idea was to get rid of the context menues, so that all "features" of the page a visible within a glance.
That's fine, I'm not too attached to the double-click thing, was just trying to provide suggestions. It's fine (for me, at least) if you don't take them because you think they don't fit :)
Maybe double-clicking outside of the text / buttons, on the whitespace area of the row, could still toggle it? Again, not sure it's an improvement :)