and it is linked from INSTALL

that will be considered production ready

it is usually found in CONTRIBUTING

since it is not anymore used

While a process-dependency-links is needed, use it for all the
envs.
Add a unit env to run unit tests.

Ticket27342 test args

Add forgotten constant import

27338 filter results

also enable intersphinx

when generating bw files

filtering results

when creating a bw file from results

* to have at least min num results
* to have results that are more recent that x secs
* to have results that are away from each other x secs

that are away from each other a min num of secs and have at least
x results

and the min num of secs that the results must be away from each
other.

Ticket27337 round bw