There is a lot more to communication in the community besides just
IRC meetings. Not all projects have set meeting times and not all projects
use a single channel. The other primary form of communication besides IRC
is the different mailing lists. This patch adds information about the mailing
lists and removes some of the more verbose information about IRC Meetings that
people new to OpenStack don't need to know. This patch also renames the
module to 'Communication' since it now has content outside of just IRC meetings.
Change-Id: I0a02c49b3de622f08699e862ca38679479f70e7e
eb769d8d59