Get web traffic overtime for all courses across all 3 modalities

[kweav]

Currently the web_traffic_overtime variable is used for this plot. It's a modified version of the ga_dims variable which is taken from the dimensions output from metricminer's get_all_ga_metrics(). However, we don't think this data is reporting on what we want which is web traffic overtime for all 3 course modalities.

[kweav]

@cansavvy did we figure out what we wanted to do with the data for this plot?

[cansavvy]

I haven't had time to dig into which of the data in Google Analytics would really get at what we need for this yet. And I don't think of it as an urgent need (although its something we should do). I can maybe get to this next week, unless @kweav you want to dig more into Google analytics to find what dimension/metric combo we would need to figure out web traffic overtime.

What this would lead to is that I would finally need to address fhdsl/metricminer#12 whichshouldn't be too too bad. But does take a little time.