Xinitrc: gtk-redshift is now redshift-gtk

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
Vim: Add support of .vala files

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
set_background.sh : Fix support of connected but inactive screens

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
Home: Fix ~/Images creation