Add a "projectStatus" property to projects

[jpkrohling]

Quite a few projects listed on the file projects.json are archived (halted, sunset, terminated and other variations). One such example close to me is GateIn: the last commit on a module I maintain is more than one year old. The last commit on the "core" module is close to two years ago. Other projects I randomly checked are 6 years without a commit (BoxGrinder, for instance).

In benefit of active projects, it would probably be useful to not list GateIn on the main list. If desired, it could be shown in a separate section, or if the user actively checks a box saying "display archived projects".

[bproffitt]

Time to do an audit, short term. Regarding the label, this would be useful. We use Cauldron to monitor project health and could easily track the level of activity for the individual projects. It may be possible to automate down the road.