Parsoid/OPW tasks

Moved to Mentorship_programs/Possible_projects (mentors must be identified there)

In reality, we are beginning to collect self-contained project ideas that we could use for OPW, GSoC, hackathons, or off-the-side projects, so we dont have to keep scratching our head each time such an event comes up. In that vein, it might be useful to also have some indication of complexity of task, required skills, expected time to complete tasks, etc.