Implement CSV / TSV import (#45)

- add csv/tsv importer
- add `make_map` script function
- add `alt name` field property
- add `construction script` field property
- add `construction script` game property

data/en.mse-locale/locale

@@ -52,6 +52,7 @@ menu:
 	add card:							&Add Card	Ctrl+Enter
 	add cards:							Add &Multiple Cards...
 	remove card:						&Delete Selected Card
+	add card csv:						Add Cards from CSV or TSV...
 	orientation:						&Orientation
 	rotate 0:							&Normal
 	rotate 270:							Rotated 90° &Clockwise
@@ -536,6 +537,12 @@ label:
 	html template:						Template:
 	html export options:				Export options
 
+	# CSV import
+	add card csv sep:					Separator:
+	add card csv tab:					Tab
+	add card csv comma:					Comma
+	add card csv file:					CSV or TSV file path:
+
 	# Image slicer
 	original:							Original:
 	result:								Result:
@@ -723,6 +730,9 @@ title:
 	export cancelled:					Export Cancelled
 	export html:						Export to HTML
 	save html:							Export to HTML
+	# import
+	add card csv:						Add Cards from CSV or TSV file
+	add card csv file:					Open CSV or TSV file
 	# auto replace
 	auto replaces:						Auto Replace