Task: Create translation for all added metadata fields

[mwallschlaeger]

Task Description

in the process of applying the bonares metadata schema, many fields were added to the base/models.py without adding translations for this fields. We need to discuss if even french and italian language should be supported by us, as it already mostly is in geonode

Additional Information

Any additional information or context that may be helpful in completing the task.

[silvadealmeida]

Translations to German added

[silvadealmeida]

BUG: Text for translation is available but does not show the translated information for fields without foreign keys.

[silvadealmeida]

Waiting for a review of #177 to finish this issue