Only shows last 100 transactions by default when checking user transactions, configurable in conf.py. New menu item for checking all of them.

Prints transactions newest-first instead of oldest-first.
User low credit warning limit now configurable in conf.py.

conf.py

@@ -1,5 +1,8 @@
-db_url = 'postgresql://terjesc_dibblerdummy:terjesc_dibblerdummy@postgres/terjesc_dibblerdummy'
+db_url = 'sqlite:///foo.db'
 quit_allowed = True
 stop_allowed = False
 show_tracebacks = True
 input_encoding = 'utf8'
+
+low_credit_warning_limit = -100
+user_recent_transaction_limit = 100