Revert "close #50 - Remove a useless test about 500 in case of not having version defined"

This reverts commit c6b67fdcbe81fccb454c515ed1cd52bd8e47ee6a.
Revert "close #50 - endpoint to provide the current version deployed in pro"

This reverts commit 1508db3ea1d121e440f79f997d775ee5b8249ba5.