Added DaemonThread class for background and cancelable threads
Database connection opened to allow access from different threads
Moved the search entry for CPU model in the upper side, at the left of the about button
Added a separator between the search entry and the about button
Moved the buttons behind the score, in the space left by the search entry
Now the search entry uses the model storeAllModels to find a CPU model from all models in the database, not only in the current series
Added a new thread to preload all the available models in the background