fix ‘Undefined variable’ warning
clean up global variables
maintain experience value of user
new experience system
add mysql function characteristic
management page for experience system
fix memory error
avoid using global buffer
Merge branch 'dev-daemon'
fix undefined constant
show problem state in search result
move js files
merge edit.js to common.js
fix misuse of .attr()
fix js syntax error on IE7
add shortcut hint
Merge branch 'master' into for_bashu