couple of things related to errors

[emanuele45]

Including #169

[norv]

So this also fixes #169 ?

I have also added the missing require directly when I moved the code to the editor (ab6fd51#L1R645). If it's useless in all use scenarios, we can remove that require.

However if we remove the require: I wonder if now, when people can and will use of the editor, and may add live_errors option freely to it, their code will have Errors loaded... because I guess one can just reuse the box.

[emanuele45]

The language error is loaded by ->prepareErrors, what I'm not sure is if it makes sense to load Errors.language just for a couple of strings that may or may not be used...maybe move that couple of strings to Post.language?