prevent undefined index
remove developer install variables
gadget enable/disable links
heading for main admin page
show description for local addons
adminpanel style
adminpanel style
display layouts using panelgroups
addon rating in new panelgroup design
add missing Addon.ini
changing layout style
save layout css options
edit css
layouturl()
move titles_using_layout
gadget popup
layoutoptions()
layoutcommands()
move commands to layoutcommands()
css preferences