Bookmarklet bugs in user attribution

[IanKemp]

1. The current version of the bookmarklet duplicates question asker names. For example running it against https://stackoverflow.com/questions/40763337/converting-iqueryable-to-implement-iasyncenumerable generates:

[tag:cv-pls] [tag:c#] socvr github issue [Converting IQueryable to implement IAsyncEnumerable‭](https://stackoverflow.com/q/40763337/70345) - [janhartmannjanhartmann](https://stackoverflow.com/users/99395/janhartmann)‭ - 2016-11-23 11:31:27Z

Note the duplicate user name before their profile link.

2. If a question is edited by a different user, that user is attributed as the asker, e.g. https://stackoverflow.com/questions/40498633/asp-net-core-unit-testing-async-controller yields:

[tag:cv-pls] [tag:c#] socvr github issue [Asp.Net Core unit testing async controller‭](https://stackoverflow.com/q/40498633/70345) - [Nkosi](https://stackoverflow.com/users/5809116/mind-tha-gap)‭ - 2016-11-09 00:25:00Z

Note that the user attributed is as the asker is the last person who edited the question, even though the link to the profile is correctly the question author.