Change default persistence to store locally on disk

Change the default behavior for a configuration so that all data is stored locally on the file system within the directory where the application is being run. So for example, we could create a directory with the repository name, and in that directory create a "store" directory (where we'd persist the Infinispan cache), a "binaries" directory for binary storage, and an "indexes" directory for the Lucene indexes. The benefit is that all the repository data survives a restart with no extra configuration, and the memory footprint is smaller. It also would (hopefully) be clear to the user that if these directories were created and they don't like the location, they can simply change them by altering their repository configuration.