Add Behat behaviours to click links and submit forms in preview.
Include announcement links for security fixes
Merge remote-tracking branch 'origin/3.0' into 3.1
Documentation link fixes
Update index.md

topics/templates doesn't exist.
Merge pull request #3003 from OliBridgman/patch-1

Update index.md
Merge pull request #3000 from mateusz/preview-behaviours

Add Behat behaviours to click links and submit forms in preview.
BUG Fix Date and SS_DateTime::FormatFromSettings
This issue is caused by the odd default behaviour of Zend_Date, which attempts to parse yyyy-mm-dd format date and times as though they were yyyy-dd-mm.