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GPIO state for the lowest consumption of STM32L052 in STOP mode

Question asked by dolezal.ivan on Nov 5, 2015
Latest reply on Nov 5, 2015 by Danish Ali
I am going to use STM32L052 in STOP mode (LSE RTC running, RAM data keeping, both RTC and EXT pin wake-up).
I know that for the lowest consumption GPIOs should be set as Analog.
What I do not know:
Should pins be connected to external pull-up or pull-down resistors to set VDD or VSS?
Can any leakage from external circuits that sets a voltage on them (without pull resistors) make the consumption worse?
Does Input Floating mode with either internal or external pull-downs/pull-ups cause worse consumption?
Does Output Push-pull mode (of course WITHOUT any external circuit allowing current flow) cause worse consumption?

Thank you for any information.