Address all the query related exception thrown by Bullet

Description of the issue 📄

As part of the pull request to update to Rails 5, https://github.com/codebar/planner/pull/1882, Bullet has started throwing exceptions on certain queries. For the moment we have set Bullet.raise = false in config/environments/test.rb. Bullet is still turned on it just logs any offences instead of raising exceptions.

Screenshots 📷

Steps to fix 🛠

Methodically go through all queries raising Bullet exceptions, and address the issue. It's almost always something to do with n+1 queries or eager loading.

To do 📋

• Claim this issue (comment below, or assign yourself if you are part of the codebar org)
• Fork and clone the repository
• Update the relevant files. Follow the steps to fix section in this issue.
• Commit your changes as one commit. Use the title of this issue as your commit message
• Submit a pull request
• Mention this issue in the PR description by including it's number
• Have your pull request reviewed & merged by a codebar team member

Review config/environments/test.rb and the Rails 5 update in pull request #1882, then run the test suite with Bullet exceptions enabled to identify the affected queries. Work through each reported n+1 or eager-loading offence and confirm the tests pass without suppressing Bullet exceptions.