Merge branch 'develop' of github.com:opencb/opencga into develop
Merge branch 'develop' of https://github.com/j-coll/opencga into develop
storage: properties files created
Merge branch 'feature/refactoring' of https://github.com/j-coll/opencga into feature/refactoring-conf

Conflicts:
	opencga-app/src/main/resources/storage.properties
Major changes:

* [storage] build folder is created
* [storage] app CLI has been moved to storage module
Merge branch 'feature/refactoring' of https://github.com/j-coll/opencga into feature/refactoring-conf
storage: properties config updated
New method to get all sources by multiple study IDs
Merge branch 'develop' of github.com:opencb/opencga into develop
Get samples by a list of sources. Consider fileIds unique
New filter by file ID
storage: some small fixes and a new StorageManager implemented
gitignore: build folder added
Merge branch 'develop' of github.com:opencb/opencga into develop
storage: develop and refactoring merged, small conflcit fixed
Performance optimization: Reduced size of batch and the frequency of the output
Added annotation to ignore method Genotype.getAllelesIdx
Updated version of datastore-mongodb due to bugfix
Better support for missing genotypes
Empty reference and alternate alleles accepted as arguments for filtering variants