Build "Old Swedish Dictionary" into easier-to-use data formats

Build "Dictionary of the Old Norwegian Language" into easier-to-use data formats

Old Norse Dictionary for Go. From The Cleasby & Vigfusson Old Norse to English Dictionary.

Old Swedish Dictionary for Go. From K.F. Söderwall's Medieval Swedish Dictionary

Old Norwegian/Norse Dictionary for Go. From "Dictionary of the Old Norwegian Language"

Old Icelandic dictionary for Go. From "A Concise Dictionary of Old Icelandic" by Geir Zoëga