Added click tracking.
Fixed clicks.
Added shortener clicks.
Added namespaced model for clicks.
Added referer and agent.
Added agent and referer string.
Added url.
Added shortener clicks.
Fixed misspelling in click code.
Added click tracking that actually works.
Added tokens and cookies.
Changed cookie key.
Added cookie for link id.
add use count tracking
merge ScienceInc/shortener for tracking clicks