Edit book name and combine author pages

[Akinabisu]

This book series is named in three different ways
Аватар. Останній Маг Повітря. Книга 1: Обіцянка
Останній Маг Повітря. Книга 2 - Пошуки
Аватар: Останній Маг Повітря. Книга 3 – Розколина

I think it would be nicer to change first two book titles to the way third one is written (or any other unified way, this one is just closest to how its written on most websites, I think?):
"Аватар. Останній Маг Повітря. Книга 1 – Обіцянка" (": " changed to " – ")
"Аватар. Останній Маг Повітря. Книга 2 - Пошуки" (Added "Аватар. " at the start)

ALSO
This translator seems to have two duplicate author pages, i think they need to be combined
Ярослав Губарев
Yaroslav Gubarev

Thanks!