BIND should strip whitespace from IP rather than give error

When adding a new record, the BIND module will give an error if there is a space before or after the IP.

I've hit this three or four times when copy-pasting, and it's always confusing. I have to think for a moment about what could possibly be wrong with '70.85.191.202 ' as an IP.

And I've had a couple of users run into it and be confused enough to ask about it.