Revert numerical parameter type fixes

This merge request reverts previous work updating API V1 and thus schema version 1 algorithm declaration.

This is done in order to keep them compatible with the currently installed online platform and also will allow to tests that beat/beat.core> can properly handle that use case.

This revert was necessary to keep the platform coherence since the concerned algorithm have already been used to run attested experiments and thus changing them even if it's only to fix the notation will void the value of the attestations.

Fixes #14 (closed)