Fix debugger interaction due new DAL

Originally, __all__ was used to filter DAL and Field globals, but now the new module doesn't explicity set that attribute, so this filter was removed.
Note that using __dict__ as a replacement is not an option, as the new dal module exports a lot of common names like connection, base, etc.

applications/admin/controllers/debug.py

@@ -72,8 +72,7 @@ def interact():
         f_globals = {}
         for name, value in env['globals'].items():
             if name not in gluon.html.__all__ and \
-                name not in gluon.validators.__all__ and \
-                    name not in gluon.dal.__all__:
+                name not in gluon.validators.__all__:
                 f_globals[name] = pydoc.text.repr(value)
     else:
         f_locals = {}