ESC key to revert field in Ajax inline editing

Hello Gustavo,

Thank you for showing this very useful module!

One useful addition would be to add a key event such that if one makes a mistake during Ajax inline editing and would like cancel the change, the ESC key would revert the field.

There is also one small oddity: when you click in an empty text field during Ajax inline editing, it receives one space as its initial value - I tried to see in your js code where it would come from, but couldn't find it ...

All best wishes!