Added @override keyword at some actions and views
Updated to Elgg 1.8.16.
Merge branch '1.8' of gitorious.org:lorea/html5 into 1.8

Conflicts:
	views/default/page/elements/foot.php
	views/default/page/elements/owner_block.php
Bumped version 1.8.0
Merge branch 'release/1.8.0'