Increase fastcgi_read_timeout to 3600 seconds

Remote Xdebug sessions were timing out at 60 seconds, making it difficult to spend time stepping through code at length. As this is a development environment, we shouldn't be worried about long sessions. This increases the nginx fastcgi_read_timeout directive to 3600 seconds, which will allow for an hour of code stepping. There may be additional timeouts to worry about, though I have tested this up to the 10 minute mark at least.

Closes #39
Log remote xdebug data
Change xdebug IDE Key setting to VVVDEBUG

Rather than an IDE specific setting of PHPSTORM, let's use something a little more generic. Though, it's not entirely clear to me that this setting matters a whole bunch as I was still able to connect without trouble even with the wrong IDE key specified.