Clean up bash shell code and add proper ENCRYPTION support

- check for invalid encryption setting
- switch from none to keyfile type (without password)
- error for no password for repokey or authentication type encryption
- update init and print out the key file data

borg.mount.sh

@@ -33,7 +33,7 @@ function usage ()
 }
 
 # set options
-while getopts ":c:m:uf:h" opt do
+while getopts ":c:m:uf:h" opt; do
 	case "${opt}" in
 		c|config)
 			BASE_FOLDER=${OPTARG};