Align documentation and revision history feature

[naglepuff]

The current documentation for navigating to the dataset history (list of past revisions) looks like this:

Currently there is no "History" button in the navigation bar. A user must first open the right-hand side bar and select "Revision history" from the drop down menu there.

The documentation should properly describe how to view the revision history. Either a "History" button should be added that opens the sidebar to the appropriate tool, or the documentation should be updated to describe the correct procedure for viewing the history.