[bugfix] GaoYan: fix users list inorder. Now users list by their id.
Merge branch 'master' of github.com:freddie218/bbs_team_a
[120] JinWuxia&YangMeng~ new style for change password page
JinWuxia: modify TreeMap<> to TreeMap<User,String> in UseServiceImpl.java
Merge branch 'master' of github.com:freddie218/bbs_team_a
[114] Yu Yan & Wei Jia: add homecontrollertest for like post