Easy to forget to save content

[mitchmac]

There's something about the user experience that makes it easy to forget to save content changes.

We should warn the user when they leave the page, do a hard refresh, etc that they will lose unsaved changes if they have in fact changed the state of a page.

[chrisdmacrae]

This should be done in Tina core, IMHO.

Either:

• Local changes to forms are stored in localstorage until discarded, up to a certain date, via Tina core
• Tina core should warn the user when navigating/exiting that the form is dirty