Bump minimum docker supported version to 1.0.
Add a validation handler to check cadvisor's underlying dependencies.
Match Filesystem listing with Filesystem Gauge name.
Both are now FS #n.
Fix Docker handler for machines that use systemd just as a naming service without controlling cgroups.
Add systemd information to validate output.
Final changes to circular buffer
update libcontainer to v1.2.0-173-g58fc931
update to support newest libcontainer update
Generate CgroupPaths when not available.

This happens always for non-Docker containers and sometimes with older Docker
containers.
fixed typo in influx docs
Dynamically create the filesystem usage.

Fixes #357.
made storage table names configurable
Dynamically update FS gauges in a stable way.

Fixes #361.
Check HTTP error code in the cAdvisor client.

This will provide more meaningfull errors than the cryptic unmarshalling
ones we've gotten today.

Fixes #362.