Merging similarity server with master version
Merge branch 'apiv2_sergio' into apiv2
Upated todo
#488 Now descriptors parameter in sound lists only accept leaf descritor names
Unified response of get_similar_sounds and query_for_descriptors similarity utilities. now both return count parameter
#488 Descriptors target can now be spceified as a sound id
#488 Added option to upload analysis file to use as target in similarity service
#488 refactored some similarity service methods.
#488 Improved search error handling in similarity_server/apiv2
#488 Using refactored similarity search functions for api calls
#488 Removing print statement, updating todo
#488 Updated apiv1 handlers to use refactored similarity service utils
#488 corrected 'more_from_pack' counts in combined search
#488 Added similarity/file handler to allow similarity search given analysis file
#488 Added pagination to similarity/file. Several fixes
#488 Added similarity sound apiv2 handler
#488 analysis files can now be used as target in combined search too
#488 Updated todo
#488 Fixing confilcts with apiv2_sergio