Replace all instances of self:: with PureChat::

This is in preperation for making classes not extend the controller.

Signed-off-by: Archer70 <code.archer70@gmail.com>
Merge branch 'master' of https://github.com/Archer70/PureChat--Beta-

Conflicts:
	Includes/parse.php
	Sources/main.source.php
Merge pull request #16 from Archer70/master

Replace all instances of self:: with PureChat::