myria-python: update submodule with backend SSL support
myria-web: add SSL support

1) Move the URI schema (http or https) into the Python myriaConnection
   variable and update the web pages (html, js) accordingly.

2) Add a SSL argument and property to the app, by default FALSE for
   now. This is a prep for their being SSL support in MyriaX soon.
Merge pull request #189 from uwescience/myria-web-https

Myria web https