refactored repositories and DB queries (#5026)

* removed unused teams from export order
* added new paginator for query instead of querybuilder
* added field hydrate enums
* hide PARTIAL deprecation
* never log deprecations in production
* replaced InvoiceLoader with native Doctrine feature
* prevent excessive permission queries
* support loading customers of team
* improved findByIds
* internalized API
* fix null string deprecations

config/packages/monolog.yaml

@@ -19,12 +19,6 @@ when@prod:
                 type: console
                 process_psr_3_messages: false
                 channels: ["!event", "!doctrine", "!deprecation"]
-# TODO reactivate once the many Doctrine deprecations are fixed
-#            deprecation:
-#                type: stream
-#                channels: ["deprecation"]
-#                path: "%kernel.logs_dir%/deprecations.log"
-#                formatter: monolog.formatter.deprecation
 
 when@dev:
     monolog: