Added missing tests for forum_is_unread
Added missing tests for forum_is_unread

dromanow/flaskbb,China-jp/flaskbb,SeanChen0617/flaskbb-1,China-jp/flaskbb,qitianchan/flaskbb,SeanChen0617/flaskbb-1,SeanChen0617/flaskbb,emile2016/flaskbb,qitianchan/flaskbb,zky001/flaskbb,realityone/flaskbb,realityone/flaskbb,SeanChen0617/flaskbb,lucius-feng/flaskbb,China-jp/flaskbb,emile2016/flaskbb,lucius-feng/flaskbb,dromanow/flaskbb,dromanow/flaskbb,emile2016/flaskbb,SeanChen0617/flaskbb,SeanChen0617/flaskbb-1,realityone/flaskbb,qitianchan/flaskbb,zky001/flaskbb,lucius-feng/flaskbb,zky001/flaskbb