Update en_GB, add en_ZA
Update ru_RU.lang
Merge pull request #1506 from Adaptivity/patch-4

Update ru_RU.lang
Merge pull request #1505 from Mierzen/master

Update en_GB, add en_ZA
Fix Iron Dust smelting issue. Close #1478
Fix a different, unrelated OreDict issue.
Merge branch 'master' into development
Merge branch 'development' into 1.8