Split form study details

[okaycj]

Summary

Fixes #327

This PR covers a few issues:

• Adds a sphinx development server to the make file and requirements.
• Update language around the "Create Study" button.
• Update screenshots of study details page.
• Update screenshots/language on updating EFP's commit SHA
• A few other small fixes here and there

[becky-gilbert]

Great!

[becky-gilbert]

Great work!!

[becky-gilbert]

This screenshot has localhost as the domain for the preview and study links, which maybe isn't ideal but not a big deal either.

[becky-gilbert]

Many users won't be familiar with GH, so it might be useful to show more of this page, e.g. full width and just from top down to the commit info. Then again, maybe it doesn't matter because I'm not sure how useful this section is anyway. I think it's much easier for users to just click the "Check for updates" button on the site, read commit descriptions and grab the commit SHAs there.

[becky-gilbert]

Do know if these links names/references are case-sensitive? In "study list page", the "s" is lower case here and upper case where it's referenced in the text above. I had a quick look in the sphinx rst docs here: https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html#hyperlinks but couldn't find a quick answer.

[becky-gilbert]

@okaycj do you know if you updated the python version in your docs virtual environment? I tried updating my environment with the updated requirements doc in this PR, and I get some errors about ignoring certain packages/versions that are not compatible with python 3.8.

I tried just running make livehtml anyway but that didn't work. It did work after I installed sphinx autobuild directly: pip install sphinx-autobuild.

Is this just me doing something wrong? Or if we are updating python, then we should change the readme installation instructions, which say to use 3.8.