improved validation to prevent duplicate suvey submissions in Response model and added javascript to prevent submission if already taken survey.
changed db config file back to default values for merge
revised error message for duplicate submission in Response model.
Merge pull request #9 from bneuman619/prevent_duplicate_submission

Prevent duplicate submission
fixed question and answer order on results page and answer order on Take Survey view
Merge pull request #10 from bneuman619/question_answer_order

question answer order
removed carriage returns in possible answers to ensure the uniqueness validation worked
Merge pull request #12 from bneuman619/remove_carriage_returns

Removing Carriage Returns in Possible Answers for Survey Creation
rebase with master