fix user blacklisting

gravity.sh

@@ -536,10 +536,9 @@ gravity_ParseUserDomains() {
     return 0
   fi
   
-  mv "${blacklistFile}" "${blackList}.tmp"
   # Copy the file over as /etc/pihole/black.list so dnsmasq can use it
-  mv "${blackList}.tmp" "${blackList}" 2> /dev/null || \
-    echo -e "\\n  ${CROSS} Unable to move ${blackList##*/}.tmp to ${piholeDir}"
+  cp "${blacklistFile}" "${blackList}" 2> /dev/null || \
+    echo -e "\\n  ${CROSS} Unable to move ${blacklistFile##*/} to ${piholeDir}"
 }
 
 # Trap Ctrl-C