Add initial translation for de-AT and de-DE. de-AT depends on de-DE and doesn't contain any tiddlers atm. Added de-CH plugin info with no content atm. Added a de-AT-DE edition, that will contain german how-to's in the future.

editions/de-AT-DE/tiddlywiki.info

@@ -0,0 +1,19 @@
+{
+	"plugins": [
+		"tiddlywiki/fullscreen",
+		"tiddlywiki/github-fork-ribbon"
+	],
+	"themes": [
+		"tiddlywiki/vanilla",
+		"tiddlywiki/snowwhite",
+		"tiddlywiki/nighttime",
+		"tiddlywiki/starlight",
+		"tiddlywiki/centralised",
+		"tiddlywiki/readonly"
+	],
+	"languages": [
+		"en-GB",
+		"de-AT",
+		"de-DE"
+	]
+}

editions/tw5.com/tiddlywiki.info

@@ -21,6 +21,7 @@
 		"en-US",
 		"en-GB",
 		"de-AT",
+		"de-DE",
 		"fr-FR"
 	]
-}
+}