Restyled config applet button to be bootstrappy.
Restyled config applet button to be bootstrappy.

aashish24/tangelo,aashish24/tangelo,mathstuf/tangelo,mathstuf/tangelo,ecohealthalliance/tangelo,ecohealthalliance/tangelo,Kitware/tangelo,Kitware/tangelo,aashish24/tangelo,ecohealthalliance/tangelo,mathstuf/tangelo,Kitware/tangelo