Increasing autogems checks to once per day.

A legendary gem cutter couldn't quite clear a full suite of jobs before the next check, but it was a close call sometimes.

plugins/autogems.cpp

@@ -20,7 +20,7 @@
 #include "df/viewscreen_dwarfmodest.h"
 
 #define CONFIG_KEY "autogems/config"
-#define DELTA_TICKS 1800
+#define DELTA_TICKS 1200
 #define MAX_WORKSHOP_JOBS 10
 
 using namespace DFHack;