Additional well-known AD object and Delete tiering button

Added all the well-known AD object I could find. ImproHound will resolve their SIDs to their well-known name and place them in the tier they belong to, when they exist in the BloodHound data.

Replaced 'Reset' and 'Save' with 'Delete tiering' button. The tiering data now always consistent between the BloodHound DB and the ImproHound GUI.