Standardized the format of some NPC parse error messages

- For better machine-parsing of such messages (i.e. in IDEs)

Signed-off-by: Haru <haru@dotalux.com>
Script syntax checker
[TO BE SQUASHED INTO PARENT COMMIT] Avoid loading map-server.conf in script-check mode
[FIXUP TO BE SQUASHED] Loaded map zones and mob db info for the script checker
[FIXUP TO BE SQUASHED] Corrected another error message using the wrong format