Add support for multiple names per title series. Currently we uses slashes as delimiters when a series is known under multiple names, e.g. "鬼吹灯 / Ghost Blows Out the Light / Candle in the Tomb". instead we want to have a multiply occurring group of two fields. The first field will be "Series name' and the second field will be "Language".
Original description: Enter a German series title for an original English series title doesn't work. The title will overwrite by the original English title. For German people it is easier to find a title by searching for the German series title.
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