import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.literacyapp.dao.AllophoneDao;
<BUG>import org.literacyapp.dao.ContentCreationEventDao;</BUG>
import org.literacyapp.model.Contributor;
import org.literacyapp.model.content.Allophone;
<BUG>import org.literacyapp.model.contributor.ContentCreationEvent;</BUG>
import org.literacyapp.model.enums.Environment;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.literacyapp.dao.AllophoneDao;
import org.literacyapp.model.Contributor;
import org.literacyapp.model.content.Allophone;
import org.literacyapp.model.enums.Environment;
