Assign a block to a finalized file
fix: 412 and 413 status codes to 409 - HTTP CONFLICT
Merge remote-tracking branch 'upstream/master' into status_code_fix
fix:  Modifying a finalized file now returns a 409
Merge pull request #178 from TheSriram/status_code_fix

fix: 412 and 413 status codes to 409 - HTTP CONFLICT
Merge pull request #176 from jc7998/assign_block_finalized_file

API Tests: Assign block to a finalized file
Merge branch 'master' into update_status_codes
Update msg strings