catalog: started upload file. Also, added properties to test.

The next line must be added in ~/.m2/settings.xml:
<CATALOG.TEST.DATABASE>catalogTest</CATALOG.TEST.DATABASE>
Merge branch 'feature/catalog' of https://github.com/j-coll/opencga into feature/catalog

Conflicts:
	opencga-catalog/opencga-catalog-core/src/main/java/org/opencb/opencga/catalog/core/db/CatalogDBAdaptor.java
	opencga-catalog/opencga-catalog-core/src/main/java/org/opencb/opencga/catalog/core/db/CatalogMongoDBAdaptor.java
	opencga-catalog/opencga-catalog-core/src/test/java/org/opencb/opencga/catalog/core/CatalogManagerTest.java
catalog: Added uploadFile params check.
catalog: Added download methods.