[新增] AjaxGetReleasePlanActionTest(UT不穩定)
[修改] AjaxGetReleasePlanAction & AjaxGetVelocityAction改成PermissionAction
[修改] 刪除ezkanban_statusorder Table的order2 & order3
[修改] ReleasePlanHelper的function name
Merge branch 'story_6773' of https://github.com/ezScrum/ezScrum into story_6773