added json rpc backend for adding an interface to GUI applications

lib/backends/jsonrpc.py

@@ -0,0 +1,27 @@
+"""
+A JSON-RPC backend using HTTP.
+
+Copyright (c) 2011-2013 "Johannes Findeisen and Rafael Timmerberg"
+
+This file is part of Linspector (http://linspector.org).
+
+Linspector is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+"""
+
+from lib.backends.backend import Backend
+
+
+class JsonrpcBackend(Backend):
+    def __init__(self, **kwargs):
+        return