achievements 7.x-1.2

Achievements 7.x-1.2, 2011-09-07
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 * Achievement unlock notifications are now JS fadeins and offline-able.
  * We no longer use drupal_set_message() to inform of an unlock.
  * A new achievement-notification.tpl.php controls the appearance.
  * Unlock notifications now fade in and out at the window's bottom right.
  * We now track whether a user has seen an achievement unlock notification.
  * If they haven't, they will the next time they login or access the site.
 * Leaderboard top rank counts can now be tweaked in the relevant configs.
  * This is in preparation for "relative leaderboards" planned for 7.x-1.3.
 * Unlocked achievements on user/#/achievements can now be unsorted.
  * That is, instead of "move to top" they can remain "as defined in code".
  * Defaults to "move to top". Config at admin/config/people/achievements.
 * Block 'achievements-leaderboard' renamed with underscores not dashes.
  * If you're using this block, you'll need to place it again upon upgrade.
 * Fixed a few PHP warnings when a user has yet to unlock any achievements.
 * Achievement unlocks are now logged in watchdog.
 * Variables are now properly deleted on uninstall.