Done most of the associations
Changed queued_bundle table to queuer
Removed surplus migration file from creating queuer table
Finished associations
Added some validations, Added name column to Bundles, changed 'correct' column from string to boolean
added content column to Choices table
added example column to questions table
changed content column in Questions table from string to text
More validations for the models
Added a validation for queuer model for uniqueness scope
Made changes to fix conflicts with remote dev branch
Fix migration error -queuers
Merge branch 'dev'