修改发起会议和退出会议两个接口的内部实现，之前漏了抛出一些异常。
Merge branch 'dev-iron' of https://github.com/FeverTeam/LivePPT-Play2 into dev-iron
Revert "修正routes笔误。"

This reverts commit d367cf3f5b48a29b76e124636460bc8392391ef4.
correct
correct
Merge pull request #25 from FeverTeam/dev-iron

Dev iron
Merge pull request #26 from FeverTeam/dev

更正。