Pass database object to others using their constructors.

Prepare SQLiteDB class functions so it can be instantiated.

src/cmaclient.h

@@ -35,7 +35,7 @@ class CmaClient : public QObject
 {
     Q_OBJECT
 public:
-    explicit CmaClient(QObject *parent = 0);
+    explicit CmaClient(Database *db, QObject *parent = 0);
 
     static bool isRunning();
     void launch();
@@ -55,6 +55,7 @@ private:
     static void registrationComplete();
 
     CmaBroadcast broadcast;
+    Database *m_db;
     static QString tempOnlineId;
 
     //TODO: move all the control variables to the client manager class