* Added 'cacheSessions' flag

* Added a cacheSessions update call to import_file_dict() in fpdb_import.py
* Added updateSessionsCache() method to Hands
* Added storeSessionsCache() to Database --- WORK IN PROGRESS and set to pass
TO DOs
- add sessions queries to SQL
- complete storeSessionsCache() so it works like we've discussed (save for adding sessionId to HP)
- add SessionsCache keys
- add SessionsCache to the default table creation and deletion methods in Database.py
- update storeSessionsCache() and all the relevant db & sql code so it writes a sessionId to HP

pyfpdb/Hand.py

@@ -278,6 +278,9 @@ db: a connected Database object"""
 
     def updateHudCache(self, db):
         db.storeHudCache(self.dbid_gt, self.dbid_pids, self.startTime, self.stats.getHandsPlayers())
+        
+    def updateSessionsCache(self, db):
+        db.storeSessionsCache(self.dbid_pids, self.startTime, self.stats.getHandsPlayers())
 
     def select(self, handId):
         """ Function to create Hand object from database """