Toolbox: update su version

Change-Id: Ic17f481806384e525dface4dfda2770789664cf9
Toolbox: update zram handling

when new zram value chosen, we calculate size and write
a new fstab for zram, on boot complete we check its existence
and set a prop so init can setup the swap space

Change-Id: Ieed4af0342782b9e0911f7948ad91d9b0d815714
Toolbox: add system category

move hostname preference from setting to here
add option to enable sshd

Change-Id: Ifee3bc1036e67d43437a5fa3bc4f2f9c7e568180
Toolbox: simplify some strings

Change-Id: I6979072487058fb93fede3436e02409d80d07bac