Set source and target levels for flume to java 7
Replaced assertions on input data format with more reasonable error handling
Added more info to malformed request warnings, changed language level down to 1.6
Fixed a bug with incorrect handling of multiple metrics per request
Fixed code style and added the test case which slipped the previous commit
Merge pull request #3 from gvsmirnov/master

Fixed the issue with malformed legacy http requests would return no http response at all.