fixed get_app problem on windows

VERSION

@@ -1 +1 @@
-Version 2.6.0-development+timestamp.2013.08.27.06.30.01
+Version 2.6.0-development+timestamp.2013.08.27.06.33.47

applications/admin/controllers/default.py

@@ -85,7 +85,8 @@ def safe_write(a, value, b='w'):
 
 
 def get_app(name=None):
-    if (app and os.path.exists(apath(name, r=request)) and 
+    app = name or request.args(0)
+    if (app and os.path.exists(apath(app, r=request)) and 
         (not MULTI_USER_MODE or is_manager() or
          db(db.app.name == app)(db.app.owner == auth.user.id).count())):
         return app