Clean up access points

* Harmonize spacing
* Use // for comments rather than #
* Harmonize call style for 'require', 'include' etc.
* Add missing profileinfo.php5
* Use "./" for path to api.php in api.php5 (to match other php5 files).
* Move documentation related to Setup.php from index.php to WebStart.php
* Remove "Initialise common code." comment in api.php (was already remove
  in most entry points)

Change-Id: I8dc4a79fd13cee49e34f250a4039b3666bd42aca
Merge "Clean up access points"