Move all our coffee files

This moves the original files into their JS locations so that when
the next commit modifies them, we dont lose history.

lms/static/js/histogram.js

@@ -0,0 +1,36 @@
+class @Histogram
+  constructor: (@id, @rawData) ->
+    @xTicks = []
+    @yTicks = []
+    @data = []
+    @calculate()
+    @render()
+
+  calculate: ->
+    for [score, count] in @rawData
+      continue if score == null
+      log_count = Math.log(count + 1)
+      @data.push [score, log_count]
+      @xTicks.push [score, score.toString()]
+      @yTicks.push [log_count, count.toString()]
+
+  render: ->
+    $.plot $("#histogram_#{@id}"), [
+      data: @data
+      bars:
+        show: true
+        align: 'center'
+        lineWidth: 0
+        fill: 1.0
+      color: "#b72121"
+    ],
+      xaxis:
+        min: -1
+        max: Math.max.apply Math, $.map(@xTicks, (data) -> data[0] + 1)
+        ticks: @xTicks
+        tickLength: 0
+      yaxis:
+        min: 0.0
+        max: Math.max.apply Math, $.map(@yTicks, (data) -> data[0] * 1.1)
+        ticks: @yTicks
+        labelWidth: 50