Add view-result-postprocessor

There are currently some shortcomings of this extension:

- It always adds the styling inline, but should support externalization
- It always adds the zepto JS but should check to see if it is necessary
- It always adds the JS inline, but should support externalization
- The node that has the view result link is added should be customizable
- The text to click on for the view result link should be customizable

Starts work on #1