[fixed/added] Adde the initilization of the variable yearstart to the initialization files.

locations/intro_initialization.qsrc

@@ -94,6 +94,7 @@ gs 'body', 'initial'
 !!	**********
 
 gs 'daystart'
+gs 'yearstart'
 gs 'din_pav'
 gs 'din_npc'
 gs 'dinSex2'

locations/intro_initialization_city.qsrc

@@ -103,6 +103,7 @@ gs 'body', 'initial'
 !!	**********
 
 gs 'daystart'
+gs 'yearstart'
 gs 'din_pav'
 gs 'din_npc'
 gs 'dinSex2'