:monbase writing fixed, advances in querymakers
:study into mongo
Merge branch 'develop' of https://github.com/opencb/opencga into develop

Conflicts:
	opencga-storage/pom.xml
	opencga-storage/src/main/java/org/opencb/opencga/storage/variant/VariantQueryMaker.java
	opencga-storage/src/main/java/org/opencb/opencga/storage/variant/VariantSqliteQueryMaker.java
	opencga-storage/src/main/java/org/opencb/opencga/storage/variant/VariantVcfMonbaseDataWriter.java
	opencga-storage/src/main/java/org/opencb/opencga/storage/variant/VariantVcfSqliteWriter.java
monbasedw: inserting studies and variants into mongo
:First monbase search trials
:mongo insert updated:
:Querys by region, HBase and MongoDB
QueryResponse object returned wrapping QueryResult objects
Compilation issues fixed
Merge from main OpenCGA develop branch -> merge-jesus
New interface for querying variants from different sources
Retrieving file extension when fetching data is now case-insensitive
Code cleanup in Monbase classes, new method for getting variants histogram in VariantQueryBuilder
Storage of variants and their samples in HBase tested
Detected lacks when storing variants in Mongo, and effects in HBase
Variant query builders interface using study name as filter
Checked insertion of variant statistics in HBase and MongoDB
Checked insertion of studies in MongoDB
Checked queries for full variants information from HBase
Checked queries for partial variants information from Mongo