adding titles and summaries to social media share links

I added parameters into the links instead of using Open Graph tags (og tags) as discussed with Dak. OG tags give us more control over what displays when shared, especially in Twitter. But, this is still a big improvement over what we have now.
This code updates the social media query parameters in title.coffee. LinkedIn does not read description open graph tags, so the description needs to be passed in the URL. It may not need every property in this method for title.coffee, but it does need some. I will take a look at it again.