Refactor openFirewall() and add support for x11vnc/vncserver

installJRMC

@@ -1178,7 +1178,7 @@ EOF"
 
         [[ -z $_display ]] && _display="${DISPLAY:-":0"}"
 
-        declare -g _port=$(( ${_display#:} + 5900 ))
+        declate -g _port=$(( ${_display#:} + 5900 ))
 
         # Get current desktop resolution
         # TODO: may need to break this out into its own function and get smarter at identifying multi-monitors