modify html5 layout meta content
add sales table migration
fix someitmes login redirect worng bug
add ascii pitcure
add sales header
add sales route
init sales controller
revise books controller syntax
fix sales table migration syntax error
add sales table views and status columns
add sales index page
add sales header selected effect
add sales create page
add sales show page
add sales edit page
add sales destroy and undo
add sales manage page
fix undo no file error
add sales rule page
modify sidebar content