Merge tag '1.4.12' into develop

Release: 1.4.12
Preparation for new development cycle after release 1.4.12
Update the changelog
Improve the page "Monthly Entries".

The Monthly Entries does not work correctly when there are multiple competitions in one month.

We can only select a month and if there are multiple competitions in a month, all entries will be shown for that month, combining the multiple competitions.
Scrutinizer fixes
Refactoring
Scrutinizer.
Documentation
Little refactoring
DRY - Medium and Calssification arrays
Move methods to Constants class.

It makes more sense to have the Medium and Classification array in the Constants class.
Missing documentation
Refactor variables for medium and classification
Split up long method
Change default return to OBJECT
Composer update
Update documentation
Update documentation
No fileinfo installed.
MySQL error message.

When there are no banquet entries a error message appears.