test pass
Metrics, aggregation and partitioning of ProjectPodMetrics implemented.
Tests are needed for the filters in MetricsController though.
I haven't run checkstyle, findbugs or PMD yet
fix relationship between projectpodmetric and project
added project partitioner
Merge branch 'project-metrics' into builder-refactor

Conflicts:
	server/src/main/java/com/globant/agilepodmaster/sync/SnapshotBuilder.java
Merge branch 'builder-refactor' of github.com:globant/PODMaster into builder-refactor