Issue #2122237 by mikeytown2: Fix advagg_ajax_render_alter so it works when ['ajax_page_state'] is empty.
Issue #2122237 by mikeytown2: fix ajax issues.
Issue #2132777 by mikeytown2: Add 'gzip_static on;' to the nginx rules in the readme.
Issue #2135343 by tubalmartin: Update YUI-CSS-compressor-PHP-port to latest version.
Issue #2136475 by dilipjain80: X-UA-Compatible value IE=edge must be wrapped around ID check to pass w3c validation.
Merge branch '7.x-2.x' of http://git.drupal.org/project/advagg into merge_upstream