Create HDocsGUI for the main window and initialize it upon new proj.

[brokenprogrammer]

The HDocs.glade should be utilized and initialized when the New button in the Splash gui is pressed.
Things to keep in mind:

• Might need to delete or destroy the splash window.
• If destroyed should the HDocs be called from the SplashGUI main or the Main.hs main ?

Possible to return an actual value from the SplashGUI main and then call the HDocs GUI from the main together with the result from the SplashGUI.