Fix admin not being able to lower legacyagelimit
Calculate classification.agelimit from criterias
Search by agelimit

Applies to current agelimit if no classifier/date is queried.
If a classifier or date is in the query, applies to a classification matching those limits.
Search by warning icons

All selected warnings must be in the classification.

Applies to current active classification if no classifier/date is queried.
If a classifier or date is in the query, applies to a classification matching those limits.
DBMigration to calculate classification.agelimit and classification.warnings
Merge pull request #52 from kavi-fi/agelimitsearchfilter

Agelimitsearchfilter