Change quarter management form and controller
Add basic ability to clone old projects

- To do: once a project that can be cloned has been cloned, the clone
  link on the old project page should disappear
Fix cloning section of projects#show view

- If a project can be cloned, we show the option to clone

- If a project cannot be cloned, we hide it
Add and fix bugs in quarter management system
Replace heavily nested routes with shallow routes