remove updateInstances code, since we're attempting to use symlinks
listServers will give us a list of all the current box servers from the plans.json file
remove old plans and fix tests
rsync tool across cobalt servers on tool add/update
symlink to /opt/tools/<tool> instead of git cloning
tool not @tool
tools: Fix rsync command
if we're in the staging env, don't use live box servers

we absolutely should consider putting plans.json in the DB
rsync all of /tools every time, but only allow one rsync process at a time
Don't use host key checking, we can't be MITM'd
fix tool rsync test
Don't store the git URL in the repository (because it might contain a password and it's publically visible)
silly: No tools user on custard instances
Actually checkout the freshly fetched repository
cd into directory *before* trying to checkout..
Fix Box.listServers to only return unique server names
Merge pull request #360 from scraperwiki/20130816-tool-symlinks

Support for tool instances as symlinks to /tools