LPS-50565 move "Edit on GitHub" into tools
LPS-50565 fix CSS styles
LPS-50568 adjust folder selection combo size
LPS-50568 add prefix to the portlet configuration
LPS-50568 show prefix in titles

Show the prefix in the browser title bar and in the content root folder
selection combo.
LPS-50568 lang keys
LPS-50574 add method to fetch KBArticle
LPS-50574 make sure article exists before use
LPS-50574 fetch (not get) article in configuration
LPS-50574 autogenerated