Update auf Laravel 5.3

Es gibt inzwischen einen neuen Release von Laravel.

Started branch 284-update-auf-laravel-5-3

Mentioned in merge request !463 (merged)

Status changed to closed by commit f9b4faad

Status changed to closed by merge request !463 (merged)

Mentioned in merge request !464 (merged)

Mentioned in merge request !469 (merged)

Status changed to reopened

Added ~8 label

Mentioned in commit f9b4faad

Mentioned in commit 417beaff

Mentioned in commit d9c8e8da

Added ~10 and removed ~8 labels

Status changed to closed

Removed ~10 label

mentioned in commit 4001e042