Logical representation change proposition [Teams -> Projects -> Trackers -> Issues/Bounties]

Instead of having teams and trackers only. Add projects.

LLVM (team)
- the LLVM (team) can add verified projects of theirs.
- clang
- Polly
- Stacker
- each project has various trackers, each tracker is only representing one query/backend
- the llvm project could have trackers for:
- http://llvm.org/bugs/enter_bug.cgi?product=libraries
- http://llvm.org/bugs/enter_bug.cgi?product=tools

Migrating to a new issue tracking system would be easier as users could still visit the usual project page and not a specific tracker.
Simultaneous usage of different issue trackers, which is not uncommon could be implemented.
The search would be cleaner as only projects not every tracker would show up.
It's easier to verify projects and let these projects handle their trackers.
Users don't have to handle and care about where an issue comes from. Only that he can search issues related to a team, or a specific project.
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No files, tests, or entry points are named in the issue. First clarify the proposed team–project–tracker–issue/bounty model, migration expectations, and simultaneous tracker behavior with maintainers; done would require an agreed scope before implementation can begin.

Written by the indexing model from the issue text.