Reorganize messages to reflect page structure

modules/webapp/src/main/elm/Messages/Comp/Dropzone.elm

@@ -0,0 +1,20 @@
+module Messages.Comp.Dropzone exposing (..)
+
+
+type alias Texts =
+    { dropFilesHere : String
+    , or : String
+    , select : String
+    , selectInfo : String
+    }
+
+
+gb : Texts
+gb =
+    { dropFilesHere = "Drop files here"
+    , or = "Or"
+    , select = "Select ..."
+    , selectInfo =
+        "Choose document files (pdf, docx, txt, html, …). "
+            ++ "Archives (zip and eml) are extracted."
+    }