[修改] Task CRU + test 完成 (D未完成)
[修改] ISQLControl 增加executeUpdate的接口
[修改] AjaxGetHandlerList的response改成json字串
Merge branch 'story_7103' of github.com:ezScrum/ezScrum into story_7103

Conflicts:
	java/ntut/csie/ezScrum/issue/sql/service/internal/MantisIssueService.java