Setting name/page title via `dash(name)`

[Matt Bauman]

Although documented, the dash(...) function doesn't support having a positional string to set its name/page title.

help?> dash
  dash(name::String;
...

[Alexandr Romanenko]

@mbauman
This is a documentation error, I'll fix it. The page title can be set via app.title = "my title", just like in the Python version.
The name parameter in the Python api is a name that defines a unique name for the flask server and is only used for passing to flask. That's why it was removed from the api in Julia