Add option to download missing stylesheets on startup

data/en.mse-locale/locale

@@ -1,4 +1,4 @@
-mse version: 2.5.8
+mse version: 2.6.0
 installer group: Magic Set Editor/translations/english
 full name: English
 version: 2026-02-28
@@ -21,7 +21,7 @@ menu:
 	export images:						All Card I&mages...
 	export apprentice:					&Apprentice...
 	export mws:							Magic &Workstation...
-	check updates:						Check &Updates...
+	check updates:						Check &Updates / New Styles...
 	print preview:						Print Pre&view...
 	print:								&Print...	Ctrl+P
 	reload data:						Reload Data	Ctrl+F5
@@ -582,7 +582,13 @@ label:
 	# stylesheet not found dialog
 	stylesheet not found:
 		The set you are trying to open uses the stylesheet "%s".
-		This stylesheet is not found on your system, please select an alternative.
+		This stylesheet is not found on your system.
+		Please select an alternative, or look for it online.
+	searching online:					Searching online...
+	searching online fail:				Not found online
+	found online downloading:			Found online! Downloading...
+	found online installing:			Found online! Installing...
+	found online fail:					Installation failed
 
 	# preferences dialog
 	language:							Language
@@ -837,6 +843,9 @@ button:
 	upgrade group:						&Update Group
 	remove group:						&Remove Group
 
+	# stylesheet not found dialog
+	find package online:				Search Online
+
 ############################################################## Titles in the GUI
 title:
 	# window titles
@@ -985,6 +994,10 @@ error:
 	file not found package like:
 		File not found: '%s' in package '%s'
 		If you are trying to open a file from another package, use "/package/filename"
+	file not found package like init:
+		File not found: '%s' in package '%s'
+		If this folder is empty or unused, delete it.
+	package name parse error:			Unable to parse package name '%s'
 	file parse error:
 		Error while parsing file: '%s'
 		%s