Maintenance, new wyvern sprites and bugfixes

It was a long time since the last update. Today I'm going to do a servers maintenance so servers will be offline for some time.

Except for internal changes here's what will be deployed:

• new wyvern and underground wyvern sprites
• auction house bugfix which prevents old buyups from showing on server restart
• add patron shop item description
• other minor fixes and changes

There are some changes planned for the near future. I'm not going into details here, but here is some game related things:

• translation tool https://translate.rogalia.ru/
• new wiki