[dev-email-errors] Email errors inline or attached

[kaneda]

• Updated Error Logs as Mail Attachments #308 to take in a max lines, so that inline emails don't exceed 5 errors by default
• Ensure that these settings default to off

[kaneda]

@erwa This should be a lot safer in all cases. The features default to off and there's a default max amount of errors to give in the inline message.

I also took the liberty of reformatting this to style best practices and removed the import .* (I personally don't like this at all, not for efficiency but for readability reasons)

[kaneda]

@erwa could take a look at this when you get a sec?

[kaneda]

@erwa any chance you could take a peak at this when you get a moment?

[kaneda]

@davidzchen could you take a peak when you get a sec?

[kaneda]

@davidzchen / @erwa any chance you could look at this?