Fixing curiously-broken file-writing code

It was just refusing to actually write anything when run inside of that 'using' block.  Odd that I was able to fix it just by giving the 'PrintWriter' a stable identifier.  Scala compiler bug, maybe?
Finishing migration changes to Play 2.2
Removing IntelliJ config files

It doesn't make sense for me to have these checked in.  If you want an IntelliJ config, just run the 'idea' SBT/Play console command.