Added new group and descriptions in left menu of generated documentation
Added new group and descriptions in left menu of generated documentation

This should give a better idea of what lies on top of what (from top to bottom)
and what should be read first (from top to bottom as well).

I added the Sandbox API group, with a single file: lb.core.Sandbox

eric-brechemier/lb_js_scalableApp,eric-brechemier/lb_js_scalableApp,eric-brechemier/lb_js_scalableApp