adsense 5.x-3.1

Changes since DRUPAL-5--3-0:

• Provide option to align the ad within the blocks
• Add ability to theme the ad unit via theme_adsense_ad()
• Use '.' as the search results path to prevent Google using the path as a keyword when clean URLs are disabled
• Remove some PHP notices when displaying placeholders for search ads
• Enable localization for the search watermark and the button text
• Add text to help pages regarding a possible delay before Google is able to serve new code ads
• Restore the old test mode
• Add options to use AdSense undocumented features
• Coder fixes
• Fix #405016: use different weights for the content section targeting to better handle views-generated pages
• Fix #122014 by gcopenhaver: don't display ads with current users' ID when using revenue sharing
• Fix #144599: Allow revenue sharing by role
• Fix #120141: Enable selection of content types in which revenue sharing is active
• Update translations and .pot file