Use https connections to fluidinfo.com, when appropriate

[Terry Jones]

We have enabled https connections to the explorer. There are a few more things that should be done.

The explorer should always use https when talking to fluiddb.fluidinfo.com because otherwise it is sending the user's credentials in the clear.

nginx is passing an X-Forwarded-Protocol to the explorer, with value 'http' or 'https'. The Explorer should make sure any links it generates to itself (e.g., to open a new explorer window) keep the same protocol. So if a user comes in via https, they continue to be using https.

[PA Parent (paparent)]

To talk to fluiddb.fluidinfo.com with https, we need either two thing:

A) install pyopenssl, which is needed by eventlet.

B) install python 2.6+. This one could be installed in another location (e.g. /opt/python2.6). It's just a ./configure --with-prefix=/opt/python2.6 .... IIRC :)