cdn 7.x-2.7-beta1

Release with new features. Most notably: #1060358: CDN and SEO — avoid SEO penalties. Also many, many bugs squashed. Many small ones, but also a few very important ones:@font-face CSS hack URLs are now supported, and the "Far Future expiration" setting is now again able to generate image styles for sites that have the infamous itok query string (which is present by default).

Plenty of reasons to upgrade. But first, a beta release, to make sure there are no regressions. Please help with testing!

Significantly increased test coverage.

Changes since 7.x-2.6:

• #2407287 by paranojik, das-peter: Farfuture Option is incompatible with image style tokens (security fix in Drupal core update 7.20)
• #1060358 by Wim Leers, jemond, bangpound, ianthomas_uk, mikeytown2: CDN and SEO
• #2010470 by angrytoast, Wim Leers: Placing DNS pre-fetch
  tags sooner to ensure quicker browser parsing
• #2213429 by mcpuddin: FarFuture incompatible with Akamai because of Vary: Accept-Encoding
• #1514182 by Wim Leers, c4rl, paranojik, greggles, divThis, pcoucke, arnested, pjcdawkins, steveOR, iamEAP, wizonesolutions: IE @font-face CSS hack URL broken by CDN module's overridden CSS aggregation
• #2481185 by Wim Leers: Rackspace CDN now uses Origin Pull as well: document this
• #2169255 by BarisW, Wim Leers: CDN_PICK_SERVER_PHP_CODE_VARIABLE constant can be removed
• #970632 by oldspot: Follow-up for: "image_captcha" path in blacklist does not work
• #2482529 by ricovandevin: cdn_block_view_alter() should not add a post render callback if $data['content'] is an empty array
• #2293553 by bradjones1: cdn_ctools_render_alter() warns of undefined index if $info['content'] doesn't exist
• #1413156 by Dmitriy.trt, Wim Leers: .htaccess rules for Far Future expiration: make it possible to use the Far Future feature directly in Apache, avoiding PHP
• #2033167 by greggles: split cdn_pick_server in user interface to separate module and/or permission and/or remove
• #2114627 by mikeytown2: Image URLs in Panels' panes: preg_match_all() expects parameter 2 to be string, array given
• #1056646 by acrollet | naeluh: Added Rewrite image URLs in Panels' panes.
• Minor improvement to CDNImageTestCase::testImage(): surround A's href and IMG's src attribute with other attributes, to ensure it works correctly in those cases.