Allow properties to configure jclouds-karaf

Also allow a properties file via --properties.
Merge pull request #93 from maginatics/properties

Allow properties to configure jclouds-karaf
Sort results of list and list-containers

For the former we only sort within a PageSet.
Merge pull request #97 from maginatics/sort-list-results

Sort results of list and list-containers
Add blobstore-container-metadata command

This pairs with blobstore-blob-metadata although is implemented a
different way.
Merge pull request #98 from maginatics/container-metadata

Add blobstore-container-metadata command
Fix up container-metadata command
Merge pull request #100 from maginatics/container-metadata-fixup

Fix up container-metadata command
Add command to list locations
Merge pull request #102 from maginatics/location-list

Add command to list locations
Rename container commands and classes

This gives all container-level commands a consistent
category-object-action pattern:

    blobstore-container-clear
    blobstore-container-create
    blobstore-container-delete
    blobstore-container-exists
    blobstore-container-list