Transform module links

- Add support for `/contents/<book uuid>:<page num>` urls in archive
- Transform legacy module links within collections to webview version

Close Connexions/rhaptos.cnxmlutils#73
Yes I think not redirecting will help.  Webview is probably not going to use the <book uuid>:<page num> urls, it already works with <page uuid> urls.  But having the <book uuid>:<page num> is good for people not using webview and for debugging, instead of always having to look up the page uuid for it to work in archive.