Update to girara-0.2.0.

Changes (from the git logs):
 o Drop GTK+2 support
 o Update translations
 o Handle scrollbars with guioptions
 o Various bugfixes
Update to zathura-0.2.7.

Changes (from the git log):
 o Remove GTK+2 support
 o Add synctex support
 o Add and update translations
 o Various bug fixes