catalog: Added unique indices and extra unique checks.
Merge branch 'feature/catalog' of https://github.com/jmmut/opencga into feature/catalog

Conflicts:
	opencga-catalog/opencga-catalog-core/src/main/java/org/opencb/opencga/catalog/core/db/CatalogMongoDBAdaptor.java
catalog: added & tested renameProjectAlias.
Merge branch 'feature/catalog' of https://github.com/j-coll/opencga into feature/catalog
catalog: UserModify and ProjectModify methods implemented.
catalog: Changed endQuery with errorMsg to throw new exception.
Merge branch 'feature/catalog' of https://github.com/j-coll/opencga into feature/catalog