Created by: fhdk
To avoid creating to separate iso-profiles for basic and extra an option is added.
-n which sets no_extra=true
When profile is parsed in util.sh in load_profile_config() a check has been inserted to set extra='false if no_extra exist.
Likewise when the util-iso.sh the gen_iso_fn() has a similar check to add the word "minimal" to the iso-filename.
eg. manjaro-17.1.6-unstable-minimal-x86_64.iso
The PR has been changed to add a -f argument to force extra="true" and if a basic iso is build it has minimal inserted in the filename.
eg. manjaro-17.1.6-unstable-minimal-x86_64.iso