Revert "Batch RemoteNodes to use a single HTTP request per cluster server"

This reverts commit 908787456498fcdaa57eeaa0517b2bda9ccf86a3.

Conflicts:
	webapp/graphite/remote_storage.py
	webapp/graphite/render/datalib.py
Merge pull request #62 from Kixeye/0.9.x-revert-batching

Revert "Batch RemoteNodes to use a single HTTP request per cluster server"