Refactored the reading of the input data so we read the tempfile only once
Fixed typo
Fixed typos
Re-enabled the soft fallback when tarsum cannot be computed. This fixes the unit tests.
Removed useless code
Small optimization in local storage
Fixed pep8 warning
Merge pull request #200 from dotcloud/refactor-stream-read

Refactored the reading of the input data so we read the tempfile only once