[132] Gongming & Jiawei: Add search post test in PostServiceTest
[132] Gongming & Jiawei: implements search method in service and mapper
[132] Gongming & Jiawei: Add search function in HomeController to deal search request
[132] Gongming & Jiawei: Add search component in home page
[132] Gongming & Jiawei: Show result in page and clean UI
Merge branch 'master' of github.com:freddie218/bbs_team_a