Fix the visual styling of the vertical timeline toolbar
@jeff
Submitted by Jeff F.T.
Description
The vertical "inline" toolbar on the right of the timeline doesn't look totally native. The path to the solution is in https://bugzilla.gnome.org/show_bug.cgi?id=738474
It is a bit unclear to me if it's still considered a gtk bug (as I always thought it to be) or us //Doing It Wrong//.
Edited by Alexandru Băluț