Initial support for crypting inside the Geek partitioning page.
Consider the old crypting support contained since the first incarnations of linstaller 5 as deprecated.

Currently it's possible to create a crypted partition. LVM is supported.
The partition will not be recognized in the installer though.
Allow encrypting only on a LVM physical volume. Also added some sort of encrypted partition detection.
Edit support in encrypted LVM PVs
modules/fstab: added /etc/crypttab generation

modules/partdisks: front/glade: some cosmetic changes in the partition window
Merge branch 'devel' into debian-devel
debian/control: linstaller-modules-base: depend on cryptsetup and util-linux
4.90.0-1