Broke main php script into separate files.

Planning for an expansion of this project, I moved
most of the functionality out of the main script, hch-survey.php,
and into two files: main-survey.php and de-activation.php. These
are then included in the hch-survey.php script.
Broke main php script into separate files.

Planning for an expansion of this project, I moved
most of the functionality out of the main script, hch-survey.php,
and into two files: main-survey.php and de-activation.php. These
are then included in the hch-survey.php script.
Merge branch 'master' into querystrings

A slight formatting difference between the two branches' versions
of the hch-survey.php file had to be fixed.

Conflicts:
	hch-survey.php