Started adding new pages
Welcome page and DB API refactoring
URL & JS rework
[DB-7450] Header button revamp; intro of navbar; removal of footer;
intro of gray theme
[DB-7450] Region control panel page
Servlet rename for consistency
Initial header bar slider and button impl for adjusting hosts and
regions
Completed user button hookup and guided tours
Guided tour clean-up and proper region reporting
DB-7569, DB-7449: Storefront region/host sliders + dynamic template sel