Refactored the auto-translators a bit
Some broken translators were replaced with different ones. Try them, yandex one seems to be the best from my testing
Custom inventory slots code was improved (by Selinoccino)
Hopefully fixed random crash that happens on autosaves (Autosaves will now wait until Rollbacker thread is not busy)
Added an ability for mods to easily add buttons to the main menu
Improved stack info in printed errors/warnings
Some typos fixed