Coding standards and some bugs.

This is an interesting module I want to contribute myself.

There are some minor things to be fixed, which I'm sending a patch:

• Do not add .css on the .info file: if you add .css in the .info it will be added on every page. The correct way is via the form array (the way you are doing in code) or drupal_add_js(). Read: https://drupal.org/node/542202#stylesheets
• Minor fixes on some comments.
• There is no need for using if ($widget['type'] == 'addressfield_standard') { because you have only 1 widget. Moreover, after the if you return $form, which may be undefined. I've fixed it removing the conditional.
• In function addressfield_autocomplete_field_attach_submit() there is $items = field_get_items(...). This may lead to a bug at the next line - foreach - because field_get_items() may return FALSE. I've fixed it adding a conditional before the foreach().
• There are many coding standard mistakes at the JS file, for example not using lowerCamelCase for variable names. I've fixed only 2 of these variables.
• A couple trailing spaces somewhere. Fixed.

The attached patch can be applied using git apply patchname.patch. This will keep the correct author information.