module can explicitly turn off cart sync. Cart module no longer
changes tracking based on stock availability. Stock module now
also updates wholesale and retail markup prices when the base
price is changed in the grid. Grid module now responds to browser
resize events when in wide grid mode. A few small improvements to
Sell module to make sure data isn't getting loaded twice due to
different browser events firing. Fixed a bug in session_expired
where reload wasn't set in some cases.