added active state to csv export

src/address.csv

@@ -1,2 +1 @@
-muster-firma,"peter, muster",peterstrasse,peterort
-hans muster,musterstrasse,musterort
+c3000,erich roth,zentralstrasse 120,5430 wettingen

src/brovski-adress-etiketten-verwaltung.py

@@ -166,6 +166,9 @@ class Application:
             with open(csv_file, "w", encoding="utf-8") as f:
                 writer = csv.writer(f, delimiter=",")
                 for address in self.address_list:
+                    if address[0] != "x":
+                        continue
+                    del address[0]
                     if address[0] == "":
                         del address[0]
                     writer.writerow(address)