Localisation updates from https://translatewiki.net.

Change-Id: I63585f4a1446f3e317f694cc95de5333732613f5

i18n/rsk.json

@@ -0,0 +1,9 @@
+{
+	"@metadata": {
+		"authors": [
+			"Keresturec"
+		]
+	},
+	"uls-plang-title-languages": "Язики",
+	"ext-uls-compact-link-count": "{{PLURAL:$1|Єден вецей|$1 вецей}}"
+}