Allow hooks to be installed in node_modules
Allow dynamic changing of hook name
"sails-hook-<name>" will automatically be changed to just "<name>", and conflicts with core or user hooks will throw an error.  sails.config.hooks can also be used to change a hook name.
Remove "string value" behavior of sails.config.hooks[hook]
More comments about how hooks are loaded from node_modules
Merge remote-tracking branch 'upstream/master'
Merge pull request #2252 from sgress454/master

Allow hooks to be installed in node_modules