Let Crowdin only list files which contain translatable strings.
Let Crowdin only list files which contain translatable strings.

+ Currently, also "styles_congress.xml" and "placeholder.xml" are listed.
+ Fix initial configuration: 16dd1fef1c8c61dbc2087bc2f1f63ad0ce1969d8.

EventFahrplan/EventFahrplan,EventFahrplan/EventFahrplan