As of workshop RW/KB, improved / fixed text messages

Also refs #351
* messages can be formatted with style sheet
* fixed: removed command from message
* added originator to command line
* msg parsing now in core
* using ITimestampBased for text messages and status messages
* allow to resize rows to content (view base)
* model / views for text messages
* removed old qt stylesheets

src/blackgui/stylesheetutility.cpp

@@ -95,7 +95,7 @@ namespace BlackGui
     {
         QDir directory(qssDirectory());
         if (!directory.exists()) return false;
-        directory.setNameFilters({"*.qss"});
+        directory.setNameFilters({"*.qss", "*.css"});
         directory.setFilter(QDir::Files | QDir::Hidden | QDir::NoSymLinks);
 
         QFileInfoList fileInfoList = directory.entryInfoList();