[refactoring2016] Merged 29-preprocessor-does-not-use-the-load-method-of-the-biofile-class with issue-8-remove-database-configuration

Updated name of load_function to be read_original_data (to be consistent with the name of the function); used BioFile.load instead of bob.db.base.File.load as default.

This reverts commit 11a7e229.

This reverts commit 36b4b243.

Resolve "Create a test to prevent some errors for scoring tools"

Closes #10

See merge request !32

Fix failing tests after corrections to bob.bio.db

Align with the package `bob.bio.db`

See merge request !31

Refactoring 2016