Update 1.2

Update 1.2 adds:

- Russian translation made by zombites-team

- Credits update

- New save system

Save&Load is menus are fused, quote the last text that appeared on screen, and additionally, there's a lock option which prevents a chosen save from being overwritten or deleted.

KNOWN ISSUES:

- While old saves still work, they are misaligned visually with the new Save/load UI.

- Credits page and "deleted" on save/load are not translated to Russian