Issue #1307910 by that0n3guy, webflo: Fixed filter for user subscriptions. (user/%uid/notifications/subscription)

Issue #1307456 by that0n3guy: Fixed 'Administer your subscriptions' link in users notifications tab.

Issue #1078772: Return a immutable object from notifications_subscription_list(), avoids side effects.

* '7.x-1.x' of git.drupal.org:project/notifications:
  Issue #1246498 by zeezhao, webflo: Fix bad hook name in notifications_content.
  Issue #1189988 by webflo | ryandao: Fixed Node autocomplete.
  Fix undefined function. implements notifications_get_subscriptions().
  Define default $field in Notifications_Node_Field.
  Issue #1112664: Use themed username in subscriptions block.

Issue #1211342 by Zombienaute, webflo: Fixed Wrong subscription type checked for author subscriptions in notifications_user().