Sort databases on homepage by argument order - #591

Closes #585 - thanks, @rixx!

datasette/app.py

@@ -159,7 +159,7 @@ class Datasette:
             self.files = [MEMORY]
         elif memory:
             self.files = (MEMORY,) + self.files
-        self.databases = {}
+        self.databases = collections.OrderedDict()
         self.inspect_data = inspect_data
         for file in self.files:
             path = file

datasette/views/index.py

@@ -97,8 +97,6 @@ class IndexView(BaseView):
                 }
             )
 
-        databases.sort(key=lambda database: database["name"])
-
         if as_format:
             headers = {}
             if self.ds.cors: