public Proposal getProposalByUser(int userId)
 {
     return(proposalRepository.All().Where(proposal => proposal.Authors.Contains(userRepository.Find(userId))).ToList().FirstOrDefault());
 }
 /// <summary>
 /// Returns a list of all the proposals
 /// </summary>
 /// <returns></returns>
 public List <Proposal> getProposals()
 {
     return(proposalRepo.All());
 }