Add missing templated user to protocol template generated from atvs_keystroke

See merge request !32

This comes from the atvs_keystroke database which uses
a dataformat belonging to a "standard" user which is
tutorial.

Add simple_digit_recognition protocol template

See merge request !31

Required for mnist/5

Fix image loading in mnist 5

See merge request !30

Add V2 version of mnist database

See merge request !29

This new version also fixes a bug making in not working
on the platform.

Add protocoltemplates

See merge request !28

This will allow to test that things are
working properly

Also add base_path parameter to v1 version.

This will allow to reuse the algorithm with
different databases.

Only exception is biosecurid_face. This one has been
deprecated.

The deprecation comes from the fact that it implements
a custom advanced_face_recognition variant that went
in as is before it could be fixed.

The Pytorch environment has been replaced by the
one named "Deep Learning".

Until recently the length of the short description
was not enforced. This has changed and thus these
algorithms would fail to install on the platform.

Refactor raw data access

See merge request !27