Redirect to Category after Vote 1.3

Correction in category url for rare case category names
Version 1.2 missed tiny bit code to handle certain category names which include characters at the end which we not want in category url.
Since those characters are stripped ( also in 1.2 ) and replaced by a minus sign, categories names like "my category name." ( note the dot at the end ) ended up as urls like "my-category-name-"

Note the minus at the end, this update corrects that issue and properly sanitize it like it should and removes the possible trailing minus.

When a user does not exist when voting, this plugin simply redirected to site.com/category/

Since a category not exist for a not existing user, obviously, the category name was not the url. And can never be.

This updates fixes the issue and simply redirects to main page, we dont want visitors to see a blank white page, right?

Included the new category url slugs introduced in VisioList 1.2
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Changed the update url in the info file to reflect our new plugins page.
This update is required if you want to run plugin version checks from within your admin panel, as the old update url is obsolete.