Cleaned up code, Fixed few more function documentations.

Modified:
1	events.php
2	htmlchunks.php
3	index.php
4	navigation.php
5	DocumentationStyle.txt

Reason:
1-4	I cleaned up some of the commented out stuff, such as the slicknav references
	I also should be up to date according to the DocumentationStyle.txt.
5	Updated the way one should use @todo and @note.