Replaced the str_replace newlines with the nl2br() function. Writing date as unix timestamp and decoding it on the comments page to allow for after-the-fact changing of date display.
Signed-off-by: Brandon Anzaldi <brandon@brandonanzaldi.com>
Replace newlines to make multiline comments work after f69f531

The file format expects comments to appear as a single line but
the output from nl2br() can be multiple lines so these newline
characters must be removed.
Add a note about using date_default_timezone_set to remove warning
Silence a warning by setting variable