Merge branch 'hotfix/2.2.0rc2' into develop

2.2.0rc2 readiness
Merge branch 'hotfix/97' into develop

Forward port #97
Merge branch 'hotfix/zendcon13-cfp-removal' into develop
Merge branch 'hotfix/homepage' into develop
Merge branch 'hotfix/2.2.0rc3' into develop

2.2.0rc3 readiness
Merge branch 'posts/2.2.0-stable' into develop

ZF 2.2.0
Merge branch 'hotfix/manual-links' into develop
Merge branch 'hotfix/apidoc-links' into develop
Merge branch 'hotfix/99' into develop

Forward port #99
Merge branch 'hotfix/dojo-loading' into develop
Merge branch 'hotfix/blog-syntax-highlighting' into develop
Merge branch 'hotfix/96' into develop

Forward port #96
Update TODO.md

The PR includes only updates for the Markdown markup. (No changes on content!)
Merge branch 'hotfix/ug-slovenia' into develop
Merge branch 'hotfix/release-2.2.1' into develop
Merge branch 'hotfix/zf2-2-1-update' into develop
Merge branch 'hotfix/zendcon-promo' into develop
Merge branch 'hotfix/104' into develop

Forward port #104
Merge branch 'hotfix/zf2a-banner' into develop
Merge branch 'hotfix/zf2a-banner' into develop