Changed Open/Import Project Page

[David Nolden]

Hi, I've noticed that when I do "Open/Import Project", I first get the
page to obtain the project from the web now.

I think this shouldn't be there, but there rather should be a separate
menu entry "Import Project from Repository" or something like that,
where that stuff could exist.

"Open/Import Project" was dead-easy and super fast before, and I think
this makes the dialog too slow. We could also think about renaming it
to "Open/Import Local Project" or something like that, to clearly
distinguish both menu entries.

Greetings, David