Adjust the anitya.project.map.update to reflect how it looks in reality

https://apps.fedoraproject.org/datagrepper/id?id=2014-a85b8b8c-7761-4f56-bc06-e344b8c376de&is_raw=true&size=extra-large
Adjust the anitya unit-tests so that the example messages fit the reality
Add logic to support removal of project mapping in anitya
Add unit-tests for the removal of project mapping in anitya
Adjust the unit-tests for the anitya.project.remove messages to reflect the reality
Set the right topic prefix for anitya.
Change the example topics.
Get fedoraproject emails without having to query fas.  Fix libravatars.
PEP8.
Add a non-fedora user to get avatars and usernames right.
Merge pull request #154 from fedora-infra/anitya

Anitya