Load Parameters before creating new parameters cause unique_name clashes

[damskii9992]

When starting out a project by loading previously defined parameters from an earlier session, the global_object map gets filled with these unique names and when the user then starts creating new parameters, the unique_name_generator increments the name iterators and eventually causes unique_name crashes with the unique names populated at load time.

This can be solved by incrementing iterators again if the unique_name already exists in the global_object when generating the unique names.