Added themehookalliance hooks

Added the tha_footer_before, tha_footer_top, tha_footer_bottom and
tha_footer_after hooks to the footer
Added themehookalliance hooks

Added the tha_sidebars_before, tha_sidebar_top, tha_sidebar_bottom and
tha_sidebars_after hooks.
Added id's and classes

Added HTML5 attributes, classes and id's to the aside tag