Issue #177 - delete Castillian from spanish language name
Issue #177 - change wording, add tooltip, change location language button
Issue #177 - reset selected language on first page visit
Issue #177 - avoid null in determining available languages
Issue #177 - use full list for master languages
Issue #177 - change in wording
Issue #177 - change wording
Issue #177 - warn user to complete adding new language