Fixed model access bug/ updated database with new changes

[ibarrezueta]

Description of Pull Request

@griffinh1 and Alex K found a bug yesterday where users can access other users' class, assignment, and student information through form options. This bug fixes that issue by adding new custom forms that filter objects by the current user that's logged in.

In order to do this, there needed to be changes to the database schema which is why this update includes a new updated/cleaned database and migrations folder.

Type of Change

Please describe the pull request as one of the following:

• [x] Bug fix
• [ ] Breaking change
• [ ] New feature
• [ ] Documentation update
• [ ] Other

Tags

[rauniyars]

Changes look good

[sutterj]

@barrezuetai Just update the branch with master and then this is good to merge.