Vector: Show a label next to the actions dropdown menu

The little triangle arrow is not clear enough, as evidenced
by the number of people who don't discover the page moving
functionality hidden in that dropdown.

Before: http://i.imgur.com/g2N3tek.png
After: http://i.imgur.com/nUsqgqe.png

Co-Authored-By: Bartosz Dziewoński <matma.rex@gmail.com>
Co-Authored-By: Isarra <s@zaori.org>
Bug: 44591
Change-Id: I09c8031ccd076228a3c9d720e92e04d40a8d97e8