When in edit mode (all editors) back/forward looses the content you have changed

When in edit mode it's way to easy to loose the content you are editing. If for any reason you leave the page you will not get your contact back when you come back.

This can happen by:

• hitting back
• leaving the page for any reason to another url
• hit 'Alt-c' (cancel) by mistake or because you want to type a c-cedille on a US keyboard on a Mac