fix(swiper): fix bug when swipe page quickly in the index 0, the page was stuck.
fix(swiper): fix bug when swipe page quickly in the index 0, the page was stuck.

BUG: when swipe page quickly in the index 0, the page was stuck. since this.activePage is EMTPY_PAGE, can not enter the near edge judge block.

FIX:
1. no one could add class or cssText to EMTPY_PAGE
2. judge if it is near edge as long as page allowed swipe, but only render activePage is EMPTY_PAGE and duration is not 0

zhangbobell/swiper,fex-team/swiper,fex-team/swiper,fex-team/swiper,zhangbobell/swiper,zhangbobell/swiper