Fix problems migration
Fix migrator
Now alloc role really creates role
Support of atoms in rolenames
Revert "Support of atoms in rolenames"

This reverts commit a04c32e0a25dccd9d6876ac3949600424d49bbfc.
Acl fixes
Now atoms converts to bin. strings in jsonee
Basic role tree
Acl resources allocation fixes
Should think about salt randomness
Registration fixes
Initial session API
Salt generator fix