Revision browser should allow reverting notebook to previous state

[wlach]

Currently the revision browser lets you view a summary of what changed, but doesn't let you actually revert the notebook content to that of a previous revision.

We should, at minimum, add a button to do exactly like this. Before actually replacing the content, it should pop up a warning dialog confirming the user wants to do this. Google docs provides a good UI example on how this is done:

Depending on where we go with iodide, we probably want to enable other things in the future (e.g. forking a "branch" from a previous revision) but for now this will move the ball forward a bit.

[ZiyaoWei]

Interested in contributing to Iodide - is this issue a good first issue to pickup? If not, I'll browse around and try to find something else (open to suggestions!).

[wlach]

Interested in contributing to Iodide - is this issue a good first issue to pickup? If not, I'll browse around and try to find something else (open to suggestions!).

I think @mehmetoguzderin wanted to pick this one up, #2114 which you filed would be a good first issue to try. I can probably suggest other things on gitter when I get back in on Tuesday.

[bcolloran]

this functionality was added somewhere along the way...