NodeLookupOperation
- Removed the unused error variable
Route Length Computation
- Before we were doing this by just adding incrementing a value everytime we get a set of nodes as the reply of a FIND_NODE or FIND_VALUE RPC
-- This may be wrong since nodes the same distance away may reply and we'll still be incrementing for both
- Created a route length checker class to properly check route lengths

ContentLookupOperation
- Added the route length check to the CLO operation and the CLO FUC

Didn't add it to the NodeLookupOperation since I'm not sure we're using it anywhere... Though it can be useful there