Current ACE version: 1.4.6

# How to update the ACE editor component

1. Download a new ACE release from (ajax.org/ace-builds)[https://github.com/ajaxorg/ace-builds/releases].
2. Extract the `src-min-noconflict` folder from the archive and rename it to `ace`
3. Rename the current `ace` folder to `ace-old`
3. Place the new version in the javascript directory
4. Test if the editor works.
6. Remove the old version
7. Update the version info in this file
