Merge branch 'hotfix/2.2.0rc2'

2.2.0rc2 readiness
Fix for background on homepage
Merge pull request #97 from froschdesign/hotfix/homepage-background

Fix for background on homepage
Updated homepage template

- #97 updated the homepage file directly, but this file is now a product of a
  template, and should be generated by running `make homepage`. I've updated the
  template with the requested changes, and regenerated the homepage using the
  tool to verify.
Updated to latest ZF2 master

- due to issue with Weakref causing inability to compile blog.
Compiled blog

- in order to pull in layout changes from #97
Merge branch 'hotfix/97'

Close #97
Merge branch 'hotfix/97' into develop

Forward port #97
Removed ZendCon13 CfP banner
Merge branch 'hotfix/zendcon13-cfp-removal' into develop