Squashed 'lib/aihrus/' changes from fcac4a8..aa71c9c

aa71c9c Check for PHP 5.3
2e0b6d0 Coding standard

git-subtree-dir: lib/aihrus
git-subtree-split: aa71c9c3bd9c7f682ee675dfafabf98778d3a60b
Update aihrus framework

Conflicts:
	lib/aihrus/class-aihrus-settings.php