Make q_link_to work

- Make q_link_to work: wraps link_to for persisted objects whose
  paths are quarter-specific so we don't have to type the year and
  season params each time we call a path helper
Make q_link_to able to generate url helpers

- Make q_link_to able to generate url helpers (in addition to path
  helpers)
- Replace old lengthy link_to's with q_link_to