Issue Summary

When you click and focus on the source view within Bitbucket, you cannot use the space-bar to scroll down the page

Steps to Reproduce

1. Navigate to a source code file in Bitbucket
2. Focus on the code pane by clicking on some file contents. You'll see an inner drop shadow
3. Press the space key

Expected Results

It scrolls down. Scrolling upon space bar press is the behavior that every other page (including this form) has.

Actual Results

Nothing happens. Checking the performance tab of the developer console in the browser indicates that this key-press is being eaten by various CodeMirror JavaScript classes

Workaround

Click outside of the code itself and press space-bar to scroll, or use the Page Down key or scroll wheel on the mouse