Provide default values for filtered output 'type' and 'period'

These values are used across most of the interactives so use them as
default.
Support 'displayAverage' option in bar graph controller

[#46397093]

This option is for authors convenience. It causes that filtered output
is automatically defined (it uses basic property as an input). Author
doesn't have to define it manually.
Update bar graph interactive to present 'displayAverage' option

[#46397093]