Add a method to get the root site of a page

This will be used to help group sites by their college/department
save the root site url while scanning
Add a script to update root sites
Remove extra `<`
Only use the second breadcrumb if there are 3 or more.

For example:
www.unl.edu -> wdn.unl.edu (the root site is www.unl.edu)
www.unl.edu -> arts.unl.edu -> music.unl.edu (the root should be arts.unl.edu)
add root sites to the URL to help with grouping
Merge pull request #12 from mfairchild365/root-sites

Add the root site URL to the chancellor's report to help with grouping