Issue 40 integrated browser refresh on rotate

Fixes Issue #40

Solution:
 - Saving the state of `mWebView` and restoring it in `onCreateView` remedies the orientation change issue.
 - Grabbing the current URL value into `mUrl` enables the "Open In Browser" functionality to open the browser with the current URL. This allows the user to navigate to different pages in the integrated `WebView` browser, and continue browsing in their choice of browser.