Issue #9: basic test directory stucture and one test for cdb.storage.
Issue #9: Refresh Issue9 branch from master
Issue #15: StorageMongo::list and StorageMongo::formatted_list methods.
Issue #15: Removed StorageMongo::formatted_list, modified StorageMongo::list, implemented StorageMongo::clip_info.
Issue #9: Test Suite for storage.StorageMongo.
Issue #15: Modified cli according changes in storage.