pickup changes to project template

stata_code/ado/vintage_lookup_and_reset.ado

@@ -2,10 +2,15 @@
 /* a small program that looks into the data folder to find the most recent vintage string*/
 cap program drop vintage_lookup_and_reset
 program vintage_lookup_and_reset
+syntax [, search_folder(string)]
+
+if "`search_folder'" == "" {
+	local search_folder="$data_main"
+}
 
 	/* Look through the data_main folder to see what data vintages are available */
 
-	local data_vintage : dir "${data_main}" files "*.dta" 
+	local data_vintage : dir "`search_folder'" files "*.dta" 
 	local data_vintage: subinstr local data_vintage ".dta" "", all
 
 	/* look through all the files and pick out the unique vintages, which are in the last 10 characters */