add tip on clicking "add all to cart" button while no goods at all,also
add tip while switch model if model selected is same with current
one.BTW remove useless string resource.

Change-Id: I355f8834c237357d4593bae0a91e98cbbebf1383
Signed-off-by: Sharl <amoiz.shine@gmail.com>
fix a bug that wrong cut action on male model,and UI changed on
temporarily cart window,also the final cart will not be reset after
"reset" button.

Change-Id: Iba520496204100a5f789ac9459d0aafbfcb6002d
Signed-off-by: Sharl <amoiz.shine@gmail.com>