Rename ucare list --kept to --stored
Add FileList resource with some unit and integration tests
"$ ucare list" is based on FileList now
Add "File List API Resource" documentation
Fix offset
Add supporting of limit on the number of objects to be returned
Fix ucare list_files
Merge branch 'master' into file-list-resource

Conflicts:
	tests/functional/test_ucare_cli.py
Merge pull request #47 from uploadcare/file-list-resource

FileList resource