[doc] Update cubicweb-ctl page about how to run an instance
* remove mention of start/stop/restart/status commands that do not exist anymore
* briefly mention the "pyramid" and point to respective documentation page
* mention that a WSGI server should be used in production
### Requirements for tests in various cubicweb/**/test directories. ###
## shared by several test folders
docutils
Twisted < 16.0.0
webtest
## cubicweb/test
Pygments
mock
#fyzz XXX pip install fails
## cubicweb/devtools/test
flake8
## cubicweb/hooks/test
psycopg2
## cubicweb/pyramid/test
pyramid >= 1.5.0
waitress >= 0.8.9
wsgicors >= 0.3
pyramid_multiauth
repoze.lru
## cubicweb/sobject/test