Fix batch operation to find correct target based on target index
Fix batch operation to find correct target based on target index

Incoming requests are converted to index based targets. Based on request and
response cache, the targets are then filtered with only new requests. When
matching the new responses with filtered targets, rather than using targets'
original array index, match the new responses based on the target index.

jsdelfino/cf-abacus-experiment,jsdelfino/x-abacus,pombredanne/cf-abacus,jsdelfino/d-abacus,nmaslarski/cf-abacus,KRuelY/cf-abacus,rajkiranrbala/cf-abacus,jsdelfino/x-abacus,BetaFood/cf-abacus-dev,KRuelY/cf-abacus,jsdelfino/d-abacus,rajkiranrbala/cf-abacus,danparsons/cf-abacus,nmaslarski/cf-abacus,BetaFood/cf-abacus-dev,kurumai/cf-abacus,cloudfoundry-incubator/cf-abacus,danparsons/cf-abacus,rajkiranrbala/cf-abacus,jsdelfino/x-abacus,sasrin/cf-abacus,sasrin/cf-abacus,jsdelfino/d-abacus,kurumai/cf-abacus,18F/cf-abacus,nmaslarski/cf-abacus,jsdelfino/cf-abacus-experiment,nmaslarski/cf-abacus,rajkiranrbala/cf-abacus,18F/cf-abacus,BetaFood/cf-abacus-dev,pombredanne/cf-abacus,cloudfoundry-incubator/cf-abacus,pombredanne/cf-abacus,KRuelY/cf-abacus,KRuelY/cf-abacus,sasrin/cf-abacus,jsdelfino/x-abacus,cloudfoundry-incubator/cf-abacus,danparsons/cf-abacus,jsdelfino/cf-abacus-experiment,jsdelfino/d-abacus,18F/cf-abacus,pombredanne/cf-abacus