Breakout of help content; reformat FAQ and Glossary pages for consistency

Applied styles according to Christopher's guidelines.

Help
- Glossary
- FAQ [fold in CodaLab.md and any of Parul Shah's changes]
- Create a Competition [needs updating/testing]
- Build a Scoring Program [needs updating/testing]

Changes:
- Added:
    - faq.html
    - glossary.html
    - build_scoring_program.html
    - create_competition.html
    - create_configure_azure.html
- Updated:
    - help.html [Turned this into a landing page with links to all help content]
    - help.py [Added hyperlinks/naming for new pages]