Idempotence has a very specific meaning and it is generally not used correctly
in the manual. My attention was first drawn to this problem by the incorrect
definition in the glossary, but on further reading of the docs I found that
the problem occurred in a number of places.
Signed-off-by: mulhern <amulhern@redhat.com>
added docs for new v2 features
restructures modules bar and core/extras info into their own pages
changed templates to refer to the new pages
added some missing ansible.cfg options
more info on gathering setting
