merge uplinks (avoid more than 1 uplink of the same type), see ubtue/tuefind#207
merge uplinks (avoid more than 1 uplink of the same type), see ubtue/tuefind#207

ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools