catalog: IOManager methods implemented
Merge branch 'feature/catalog' of https://github.com/j-coll/opencga into feature/catalog
catalog: Added DBObjectToProjectConverter and DBObjectToStudyConverter
Merge branch 'feature/catalog' of https://github.com/jmmut/opencga into feature/catalog

Conflicts:
	opencga-catalog/opencga-catalog-core/src/test/java/org/opencb/opencga/catalog/core/db/CatalogMongoDBAdaptorTest.java
catalog: PosixIOManager basic API for managing a standard POSIX filesystem done
Merge branch 'feature/catalog' of https://github.com/j-coll/opencga into feature/catalog
catalog: Added file management and improved converters.
catalog: a few bugs in PosixIOmanager fixed
catalog: Logout and removeFile added
catalog:stable version. Pre-change java beans for nested model
Merge branch 'feature/catalog' of https://github.com/j-coll/opencga into feature/catalog
catalog: Changed javaBeans for nested model
Merge branch 'feature/catalog' of https://github.com/opencb/opencga into feature/catalog
CatalogMongo: improved getStudy and createAnalysis.