getPath() removed from WeblogCategory, corresponding updates made to rest of code.  *URLStrategy.getWeblogCollectionURL() presently relying on root category having a name of 'root' to determine it's the root category, perhaps can be handled more elegantly.

git-svn-id: https://svn.apache.org/repos/asf/roller/trunk@1566457 13f79535-47bb-0310-9956-ffa450edef68