Select views for new sidebar

[mquevill]

I'm not sure if it's safe to assume that (most) people have the new sidebar at this point, or if we should retain past compatibility. This should allow for selecting view through the View menu, if users want to select it that way.

I renamed the actions to reflect what Messenger calls the different views as well.

I am very open to any suggestions about how this should be handled or adjusted as needed.

Fixes #1984.

[dusansimic]

I'm not sure if it's safe to assume that (most) people have the new sidebar at this point

Really? Why? It's been quite a long time now and we haven't had any reports about it. It's mostly that selectors got broken because of ui changes.

[mquevill]

I'm not sure if it's safe to assume that (most) people have the new sidebar at this point

Really? Why? It's been quite a long time now and we haven't had any reports about it. It's mostly that selectors got broken because of ui changes.

It seems like there have been several generations of what's considered "new". I'm good with removing the checks in selectOtherListViews() if you think that's fine.

[dusansimic]

It seems like there have been several generations of what's considered "new".

That's correct. I'd just like to deprecate checks like these at some point since it becomes quite rare. This could be safely checked with anonymous telemetry which should be opt in in order to respect users privacy but should be recommended in order to help us maintain Caprine. That's however a topic for another discussion.

I'll merge this now. Thanks for the good work!