This reverts commit 5b5325a2.

Let's use binaries instead

[instructions] Install master in Ubuntu-20.04.

Add files to generate and use a HPP docker image.

Co-authored-by: Guilhem Saurel <guilhem.saurel@laas.fr>

remove hpp-wholebody-step references & add more unit tests

See merge request !14

ref. https://github.com/humanoid-path-planner/hpp-manipulation/pull/98

sync with devel

See merge request humanoid-path-planner/hpp-doc!13

update devel

See merge request humanoid-path-planner/hpp-doc!12

ref. https://github.com/humanoid-path-planner/hpp-baxter/pull/9