show state and allow exit based on state

src/main/resources/ninja/javafx/smartcsv/fx/smartcsv.properties

@@ -9,6 +9,17 @@ menu.edit = Edit
 menu.help = Help
 title.validation.errors = Validation Errors:
 
+stateline.csv = CSV:
+stateline.configuration = Validation Configuration:
+stateline.state = State:
+
+state.changed = changed
+state.unchanged = unchanged
+
+dialog.exit.title = Close Application
+dialog.exit.header.text = Do you want to close application?
+dialog.exit.text = There are changes made to the csv file. If you close now, the changes are lost!
+
 # validaton messages
 validation.message.not.empty = should not be empty
 validation.message.integer = should be an integer