New insert player function for HHC import

Added getSqlPlayerIDs to Database.py - returns a hash {playername:sqlid}

Function uses a caching hash in Database.py to reduce the number of round trips to the database needed just to fetch the player ids for later inserts.

Need to do a performance comparison on a larger import.

pyfpdb/fpdb_import.py

@@ -401,8 +401,8 @@ class Importer:
                 self.pos_in_file[file] = hhc.getLastCharacterRead()
 
                 for hand in handlist:
-                    hand.prepInsert()
-                    hand.insert()
+                    #hand.prepInsert()
+                    hand.insert(self.database)
             else:
                 # conversion didn't work
                 # TODO: appropriate response?