Notify user when undo/redo is triggered
Add translation for undo/redo events
Merge pull request #547 from latin-language-toolkit/history_notifications

Send a notification when history triggers undo/redo
Fix grid screenshot scaling
Add Awards section for ELCH to landing page

Conflicts:
	dist/i18n/fr.json
Minor typo in landing page
Fix landing page example xml

Works on #471
Add outputter to example conf
Accept pure outputters in saver

Works on #471
Fix i18n in landing page