Add rules to nginx.conf to redirect all http requests to https.

[lbeckman314]

Successfully tested on following URL's:

• Root domain:
  • http://aced-training.compbio.ohsu.edu → https://aced-training.compbio.ohsu.edu
• Domain with path present:
  • http://aced-training.compbio.ohsu.edu/identity → https://aced-training.compbio.ohsu.edu/identity

Happy to add or remove line as needed!