Fix for wrong database fields

The following commit changes 'is_required' to 'required' in the code but the installations creates a database with 'is_required'. This is a fix for the database.
Fix EntryModelGenerator
Merge pull request #3188 from jasonagnew/2.3/develop

2.3/dev Fix for wrong database fields - errors on installation
Format users table
Merge branch 'refs/heads/2.3/develop' into 3.0/develop