JSMessages: add support for messages containing plural forms
JSMessages: removing typo in unit test
JSMessages: polishing the comments
JSMessages: polishing the comments
JSMessages: polishing the comments
JSMessages: adding a note about language support
JSMessages: 'plural' does not have to be capitalized
JSMessages plurals: in case of missing or invalid plural arguments, maintain the MW behavior compatibility
JSMessages plurals: when there is not rule for a language sub-code, use the main language rule as a fallback
JSMessages: tiny fix in the code comment
JSMessages: small code simplification
Chat: fixing styles for chat module embedded in the article
Chat: fixing bug with chatters carousel when a page contains multiple chat entry points
DAR-1724 creating JSMessages package for chat entry point
DAR-1724 always include chat entry point messages package when chat is enabled
DAR-1724 Chat entry point - method for getting the information about chatters
DAR-1724 Chat entry point - adding method documentation
DAR-1724 using shared method for generating memcache key
DAR-1724 - removing debug code
DAR-1724 removing debug memcache change