Use gspell instead of GtkSpell
@swilmet
Submitted by Sébastien Wilmet Link to original bug (#766767)
Description
I see that GtkSpell is used in gs-review-dialog.c.
gspell can do the same thing as GtkSpell (and more), has a better implementation, contains less bugs, has unit tests, and is hosted on gnome.org. But I'm of course a bit biased to compare the two libraries.