Dev search

For [galaxy/16](https://github.com/cvan/galaxy/issues/16), I needed a way to get developer info via the slug from the url.

**in users.js**:
+ Create a list of developer id's under a company slug in redis. Update list when company Slug is changed
+ Add method for getting all developer id's under a company slug
+ Add method for getting company info for a developer slug (along with helper methd that picks info to return)

**in search.js**:
+ Add devSlug parameter to search against
+ if devSlug parameter specified, search for company info

Note: I created a branch on cvan for this before I realized I should fork.  Will do next time!