Add command to set default rank. Only used by admins.

/f defaultrole <role>

src/main/java/com/massivecraft/factions/Faction.java

@@ -219,6 +219,10 @@ public interface Faction extends EconomyParticipator {
     // promotes new leader, or disbands faction if no other members left
     public void promoteNewLeader();
 
+    public Role getDefaultRole();
+
+    public void setDefaultRole(Role role);
+
     // ----------------------------------------------//
     // Messages
     // ----------------------------------------------//