Featured groups don't have a div container

[jessewoo]

Reference

• https://sdx-sdsc.atlassian.net/browse/HZ-189
• https://theghub.org/support/ticket/2615

Summary of the Issue

Need to have feature groups wrapped in a div with class 'groups-container'

Summary of the Development

Added in outside div container with class named 'groups-container' in 'com_groups > site > views > groups > tmpl > display.php'

[jessewoo]

@dbenham @nkissebe