1. Rewrite search-select component, the following features have been added:
(1) Fix the search area, when the number of options is to much, if search area scroll with options together, will be inconvenient.
(2) Change the implementation method. If use element-ui component inside, when options is to much, the create and destory of VueComponent will cost too much time, and cause negative impact to performance. And the execution of filtering, select all, clear all, depend on traversal and distribution of events, also cost too much time. So now use the native dom instead.
(3) Fixed the display when the length of label is too long.
(4) Add the press 'enter' event.
2. Add violent click preventor for table pagination page number.