Esc doesn't exit note

[Akrog]

Sometimes, when editing a note, the Esc key does not work and we cannot exit note editing using shortcuts.

This gets fixed when we reload the page, so it could be a problem with key listeners, and it may have been fixed when we fixed issue #7.

I have only seen this when the Chrome tab is left open on EverNote for a long while with the note visible. Though that may not be only case when it happens.