Merge pull request #21 from milsyobtaf/master

Styling
Merge pull request #22 from milsyobtaf/master

Header image and group nav fix
added custom group sidebar region, added a template function that auto-creates region variables and assigns node classes based on them
Merge pull request #23 from milsyobtaf/master

Styling for group sidebar
Merge pull request #6 from TheLibratory/master

Added functions and markup for custom regions, specifically the group sidebar region