lighttable: run style beautifier
cleanup: removed dead code.
(cherry picked from commit aeb5e455dbc434084ea0bb4a32cf077d64bd4ac6)
ratings: press 1 to toggle 1 star (avoids moving right hand from mouse to 0)
(cherry picked from commit f48273f214a8268230f177e30b1410d85d7b95bb)
ratings: fix string for 0 stars.

`desert' was the name for clicking on no user interface element on the image, not the 0 rating.
(cherry picked from commit bf70dff9c6f15785981ac8fd1edbedfc0ca4b4e5)
Enable ctrl-d to duplicate on lt by default
(cherry picked from commit e31aca939a58c63980e9977ef5f3ac1dfab4303e)