start #5
json serializers
fix #5. Now use json-based serialization. Expecting less performant and less size efficient but hopefully it will give us more backward compatibility. Though we still need code to handle the compatibility problem. One simple strategy would be ensuring future added/removed config item should have Option type.
fix #7 and #8 Set extra resource bases in Parameters admin page. separate multiple resource bases with ":"
Merge branch '#5'