[fr] follow #1427

Improve Model::updateAll() documentation
[fr] follow #1425

Clarifying behavior of 'unique' option in HABTM
Remove autofocus from search box.

Chrome will not scroll to anchor references when a field has autofocus.
Remove the HTML based autofocus so chrome users can get to anchor
points.
Focus the search input if there is no fragment.
Merge pull request #1432 from cakephp/remove-autofocus

Remove autofocus