DOCS Added info about adjusting Image quality using new config
Merge pull request #2944 from howardgrigg/Docs-patch

DOCS Added info about adjusting Image quality using new config
Added min stability for composer

Required for scrutinizer runs
Add PHP 5.6 to Travis
NEW Added FormatFromSettings(). Formats dates as per user preferences.

- Required for silverstripe-cms/issue/965
- Flexible enough to take date set via setValue() or via argument.