Add js/print-area to readme.rst
js/dbdiff: Fix compative with IE8
js/print-area: Better compatible with IE, FF
js/dbdiff: Remove cover iframe when print
js/dbdiff: Use id of dbdiff frame as return value
js/dbdiff: Fix html error
class/ListTable: Use jQuery.support instead of jQuery.browser
Move all loader of css, js to loader/ dir