* replaced "LoadSCP" func with "LoadDB <dbname>" (different syntax!); removed all other scp db related funcs except "getscpvalue"
* the GUI can now show texts stored in databases
* added displaying status to SceneLogin
* misc fixes/cleanups
* show logon gui when using "gui" command and not connected
* create realmsession only after pressing Login button on gui and not before
* cleaned up some parts of code that creates RealmSessions
* added some code (but not yet used) to exchange status messages between core & gui (threadsafe)