suggestion to add option to toggle through all topics

[lajanda]

At the SMARTool launch, Svetlana made an excellent suggestion, namely that it would be useful to have the option to choose “all topics” and then toggle through all items. Her suggestion was particularly in connection with the Min russiske reise version, but could be a good idea for the entire eng>rus version, as well as the generic version.
--laura

[bast]

I have moved the issue to this repository.