Cylon 5.3-5 released

Minor update caused by pacman 5.1 release breaking stuff.
pacman 5.1 update has split misc tools into new separate package, called pacman-contrib.
Some of these tools are needed, so added pacman-contribs as a dependency to cylon,
Also pacman-optimise tool now obsolete and permanently removed, so option removed from pacman menu.
Cylon