Improved AlignmentProtoHelperTest.
Merge branch 'develop' of https://github.com/j-coll/opencga into develop
Computed bucket overlaps in AlignmentRegionHBaseDataWriter.
Merge branch 'develop' of https://github.com/j-coll/opencga into develop

Conflicts:
	opencga-storage/src/main/java/org/opencb/opencga/storage/alignment/AlignmentRegionHBaseDataWriter.java
Merge branch 'develop' of https://github.com/j-coll/opencga into develop

Conflicts:
	opencga-storage/src/main/java/org/opencb/opencga/storage/alignment/AlignmentRegionHBaseDataWriter.java
	opencga-storage/src/test/java/org/opencb/opencga/storage/alignment/AlignmentProtoHelperTest.java