Feature #800

- Added feature #800, adding a new command 'columns' that lists all the columns
  available for custom reports, and includes their formatting options (thanks
  to T. Charles Yun).

src/columns/ColStart.cpp

@@ -39,6 +39,10 @@ ColumnStart::ColumnStart ()
 {
   _name  = "start";
   _label = STRING_COLUMN_LABEL_STARTED;
+
+  _styles.push_back ("active");
+
+  _examples.push_back (context.config.get ("active.indicator"));
 }
 
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