Rename the cli commands: Great FeedGuild to ConvoCore Renaming.

--HG--
rename : bin/fgadd => bin/ccadd
rename : bin/feedguild => bin/convo
Track down some FeedGuild stragglers: Great FeedGuild to ConvoCore Renaming.
Use the project name in the version blurb: Great FeedGuild to ConvoCore Renaming.
Don't include Python packages until the code actually needs it.
Remove leftover peewee model initialization from the vagrant app provisioner.