favorites are centered now
header stays on top while scrolling
delete light from group
redesign of the overlapping menues
delete groups on lightandgroup.html, redesign overlapping menues, notifications
added links to groups in light.html
lighthtml add groups functionality and design
changes in overlay text
grouphtml - delete lights, delete group,change color, layout in overlayers
grouphtml - add lights
bugfix
lightandgrouphtml - create group
grouphtml - add favorites
make everything (just in code) look nice