Allow 'name' in keyworded args for url_for() and url_path_for()

[Kludex]

• Replaces allow 'name' in key word arguments of url_for() and url_path_for() (#608) #611

• Closes "url_for" signature prevents use of "name" in path arguments #608

• Should I wrap into a try..except with a more specific error?

Missing

• Test
• Update docs

[dansan]

I finally got to rebasing, so this is now a duplicate of #611 ?

[Kludex]

Let's continue there :)

Thanks!