Fixed --password issue

This fixes the length check for the argument length supplied to `--password`, specifically:
`./cyberpanel.sh: line 1554: [: testpassw0rd: integer expression expected`

Author: Znuff

cyberpanel.sh

@@ -1555,7 +1555,7 @@ else
 						elif [[ "${1}" == 'r' ]] || [[ $1 == 'random' ]] ; then
 							ADMIN_PASS=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 16 ; echo '')
 						else
-							if [ ${1} -lt 8 ] ; then
+							if [ ${#1} -lt 8 ] ; then
 								echo -e "\nPassword lenth less than 8 digital, please choose a more complicated password.\n"
 								exit
 							fi