change log/development.log
association commit
added validations for problems and solutions
conflict resolved in problem.rb and development.log
conflict resolved in problem.rb
update development log
changed data type of title from text to string in problems schema. 2. added downvote to solutions schema
added character length restrictions to problem text, title and solution text and also corrected other validations
added character length restrictions to problem text, title and solution text and also corrected other validations