v2.0.2
[BUGFIX] Check if EXT:filemetadata is installed
The commit "[BUGFIX] Render custom fields for file metadata" introduced a new issue: the picturecredits fields were only available if EXT:filemetadata is installed in the system.
The reason is that separate "showitem" lists for file types are provided only by EXT:filemetadata. Using only the EXT:core version, one can not add new fields to selected types with ExtensionManagementUtility::addToAllTCAtypes()
.