purge header template cache on changing scheme
fix dropdown closing on inner click
header dropdown only shows first 3 schemas
add schema positions
fix schema layout not defaulting to empty array
add subject editor for reordering schemas
fix subjects editor saving invalid icons
fix completed contents returing progress over 100
fix subjects page layout
fix schema layout parser
fix schema editor
improve dropdown schema list spacing
fix block editor new block
add video paremeter fallback
fix block page not working without schema
fix video editor new video
fix block video icon wrapping
fix alert right float breaking on mobile