The Last Story character tag renames

BUR #55476 has been approved by @evazion.

create alias therius -> tasha_(the_last_story)

The Last Story characters:

• Therius is the English localised name. He's "Tasha" in JP.
• Count Arganon is just incorrect. He's "Arganan" in JP and EN. (edit: split to new BUR)

The romaji names in the credits:
https://www.youtube.com/watch?v=_QNVvFfofU0&t=809s

BUR #55512 has been approved by @evazion.

create alias count_arganon_(the_last_story) -> earl_arganan_(the_last_story)

Count Arganon is in error on two counts:

• His name is "Arganan" in both JP and EN.
• In EN he is "Count", but in JP he is "Earl".

https://www.youtube.com/watch?v=lCyVGNvZeJE&t=8m23s

General Trista is more complicated. His name is トリスタ将軍. In his JP boss fight and the credits his name is "Master Trista". I don't know if "Master" is meant to be analogous to 将軍.

As far as I know "General" doesn't appear anywhere in romaji in JP, but that is his rank in EN.

Tag could probably just be "Trista". But I don't have strong feelings.

The bulk update request #55476 (forum #420737) has been approved by @evazion.

The bulk update request #55512 (forum #420864) has been approved by @evazion.