Updated Russian translation
Update README.md

Some typos fixed.
Update DATABASE.md

Some typos fixed.
Merge pull request #1692 from define/patch-6

Updated Russian translation
Merge pull request #1693 from Phylon/patch-2

README.md and DATABASE.md updated.
Updated changelog
Fix changelog
2.0.27 stable
Merge tag '2.0.27' into patch-5