Revert "Update jquery.mCustomScrollbar.concat.min.js"

This reverts commit 424a816d396e09c1bcb8375039df267ff1daff5d.
Revert "Revert "Update jquery.mCustomScrollbar.concat.min.js""

This reverts commit bcaac0d8c3e9e83edac60bd479dcf240881b6408.