setup virtual partition min/max size variables

Change-Id: Ic3a25e24e845c85ae6ddf2db0bd0a15ee4cf625c
devices/(all) add defines for virtual partition min/max sizes

Change-Id: I6b24ccd718e0d0975f2b00f5e3e53b87e3451c3f
safestrap theme: add checks against new min/max default partition sizes for rom creation screen

Change-Id: I775b709039380aaed84b1bf1333256d7c9b4c439
devices/common: add script-based check-fs instead of hard-coded

Change-Id: I77ced08dd262cd1b9d2e1d9825f9d50d7b7c2a30
bugfix: dont remove /mnt/* mount points for 2nd-init

Change-Id: I08fccf2c1a2e38bfa94bd497d7b8c6bfc4f1b99d
bugfix: dont unmount selinux / cleanup files for 2nd-init

Change-Id: Ifda4b256e258faaeea63eef555659123622a5b87
bugfix: disable ext4 journaling if ss partitions are on emulated storage

Change-Id: Iad0941a3a4fcd77a5f7f858b2b3c01245773624f