Fix BlackMisc header includes

* Include only what is used
* Use forward declaration when possible
* Sorted includes

refs #630

src/blackmisc/network/rolelist.cpp

@@ -7,8 +7,13 @@
  * contained in the LICENSE file.
  */
 
+#include "blackmisc/network/role.h"
 #include "blackmisc/network/rolelist.h"
 
+#include <QJsonObject>
+#include <QJsonValue>
+#include <tuple>
+
 namespace BlackMisc
 {
     namespace Network