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.
Yes, but it should not be loaded/removed by every single view (there are dozens of views on some pages).  This is just like the canonical links.  See my PR that refactored those: https://github.com/Connexions/webview/pull/705