Migrate - ROM backup 5.0.1

Nov 10, 2018

v1.1

# [New] Backup verification before zipping
# Major code refactoring and under-the-hood changes
# CANCEL button now kills the backup process
# Fix to "set_progress()" in recovery
# Probable fix to "Failed to change locale for db"
# Probable fix to missing updater-script
# Probable fix to some "Operation not permitted" issues
# Remove illegal characters from backup name
# "Share scripts" option should now work properly.

v1.1.1

# Fix to a no-closing-quote issue in helper