Add additional user meta-data to mini profile and main profile page

[Blakeinstein]

part of Upvision/community-back-end#3

Most details need to be implemented on front end as well.

• Year (Current active year, to be dynamically calculated. Inclusive of Alumni)
• Tenure (Years spent in college, may not be 4/2 years provided year backs)
• A list of user editable experiences.

Move suggestions to the linked issue on the back-end repo.