[inaka/elvis-server#17] Organization related API functions.
[inaka/elvis-server#17] Fixed API call url.
[inaka/elvis-server#17] Added page option. Improved module's API.
[inaka/elvis-server#17] All pages from API calls that get repos info.
Merge pull request #72 from inaka/jfacorro.elvis-server.17.list.all.repos

[inaka/elvis-server#17] List all the repositories for which the user has admin permission.