Add file summaries, @copyright tags and other comments. Covers majority
of the PHP code base now. I have avoided being too verbose and omitted
some potential tags.

Most visibly to the user, this comments every user configurable setting
and clarifies what some of the options do.

POMF_DB_USER and POMF_DB_PASS are not rendered perfectly in
phpDocumentor version 2.8.5. This is a sacrifice I made in attempt for
not being too verbose and obvious.

Response class gets a @todo for being a god object.

Normally in include_once if a script does not load PHP will treat it as
such as an E_WARNING, while require_once fail the script with a
E_COMPILE_ERROR if the script does not load.

Since we require all of these scripts to properly function it
will be better to classify them as required in PHP.

Reported-by: Juuso Lapinlampi <wub@partyvan.eu>
Reviewed-by: Juuso Lapinlampi <wub@partyvan.eu>

Interestingly, static/classes/UploadedFile.class.php is not licensed
under Expat license. Because it was posted in PHP.net comments, I
believe it's under the PHP license.

PSR-2 [1] is a highly regarded style guide in the PHP community
according to Stack Overflow [2].

The indentation was out of place in the source code. I've seen a
combination of 1 space tabs, 3 space tabs, 4 space tabs and 5 space
tabs. Some closing braces on the same line and a lot of the code
(especially moe code) had reached the point of losing readability.

Converted with php-cs-fixer and some hand adjustment.

[1]: http://www.php-fig.org/psr/psr-2/
[2]: https://stackoverflow.com/questions/3638083/list-of-highly-regarded
-php-style-guides