Add packages job

This job can be used to install and remove packages.
Enable resize+alongside radiobutton if osprober reports multiple lines.
Fix layout in partitioning choice page.
Merge pull request #116 from plfiorini/packages

Add packages job
Prevent segfault on exit when module not found.
Improve Osprober logic to immediately check if entries are resizable.
Fix fstype names for mount -t syntax.
The vfat driver apparently supports FAT16 too, be consistent.
Merge remote-tracking branch 'origin/master' into manjaro
Merge remote-tracking branch 'origin/autopartitioning' into manjaro