Updated pyval and its page, added h-code aliases.

Pyval page was updated with more help/examples.
Pyval was updated to latest version (1.0.5).

Added highlight-code aliases, short names (aliases)
can be used in place of longer names.
Example:
    [py]import os[/py]
    instead of:
    [python]import os[/python]

    ...thats an 8 character saving, which adds up
    to a lot more if you have several codes on
    one page. :)