fix(ngSanitize): update to exclude smart quotes

Request Type: bug

How to reproduce: Add a smart quote (single or double) at the end of a
url string and filter the string with linky. Example plunker:
http://plnkr.co/edit/CeB5x48U0D1eXq4yXkvk?p=preview

Component(s): ngSanitize

Impact: small

Complexity: small

This issue is related to: 

**Detailed Description:**

When smart quotes are included in content filtered through linky, any
smart quote at the end of a URL string will be included in the link
text and the href.

**Other Comments:**