Add cyrillic chars to font25x.png
use only font25x for now ( lose some pixel charm, but i have only one usable cyrillic font for now :( )
rename app, so it can coexist with original pixel dungeon on one device
mark version as 1.7.2a-rus
update aboutScene ( add russian translation contact )
Merge branch 'master' of https://github.com/Mikhael-Danilov/pixel-dungeon
show russian translation credits only in russian locale