Adding a way to see the git SHA from the website

[mistercrunch]

The SHA is stored in a static file whenever setup.py is run. I added a link to the static json file to the navbar.

[ascott]

i'm wondering if this needs to be a link in the header. is it primarily for developers to see the sha or do we want our users to have access to this as well?

could we make this link visible only to admin users? or another option would be to add it as a comment in the navbar markup, then we would just need to view source to see the sha, and we wouldn't have to show anything in the ui.

[bkyryliuk]

LGTM
There are some benefits as users can report sha to us when they have issues.

[mistercrunch]

Yeah it's a little rough to have this link there but the reason I didn't put it in as a hover or tooltip is that I didn't want to open the file for reading at every web request and didn't know how to make it available in the global jinja context.... I think it serves its purpose now and we can polish it later.