Frontend (about to be ComputationalEyeBrain) dev branch

[DavidBrainard]

I either just did or will soon create a dev branch for frontend -- I don't think we should be developing on a branch called HJ. The dev branch was just forked from the HJ branch, however.

I think the idea is that we will issue pull requests for changes to go into the dev branch, and periodically update the master branch from the dev branch.