Changed default value of "Default duration of new appointment" from 2 hours to 15 minutes. This resolves bug 236.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

(cherry picked from commit b46c8e41db)
Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

korganizer/korganizer.kcfg

@@ -146,7 +146,7 @@
     <entry type="DateTime" name="DefaultDuration">
       <label>Default duration of new appointment (HH:MM)</label>
       <whatsthis>Enter default duration for events here. The default is used if you do not supply an end time.</whatsthis>
-      <default>TQDateTime(TQDate(), TQTime(2,0))</default>
+      <default>TQDateTime(TQDate(), TQTime(0,15))</default>
     </entry>
 
     <entry type="Int" key="Default Reminder Time" name="ReminderTime">