Replace with CoffeeScript generated version of JS.

Includes reformatting to 4 spaces.

common/lib/capa/capa/inputtypes.py

@@ -549,7 +549,7 @@ class JavascriptInput(InputTypeBase):
 
     TODO (arjun?): document this in detail.  Initial notes:
     - display_class is a subclass of XProblemClassDisplay (see
-        xmodule/xmodule/js/src/capa/display.coffee),
+        xmodule/xmodule/js/src/capa/display.js),
     - display_file is the js script to be in /static/js/ where display_class is defined.
     """
 

common/lib/xmodule/xmodule/capa_module.py

@@ -29,11 +29,9 @@ class CapaModule(CapaMixin, XModule):
     icon_class = 'problem'
 
     js = {
-        'coffee': [
-            resource_string(__name__, 'js/src/capa/display.coffee'),
-        ],
         'js': [
             resource_string(__name__, 'js/src/javascript_loader.js'),
+            resource_string(__name__, 'js/src/capa/display.js'),
             resource_string(__name__, 'js/src/collapsible.js'),
             resource_string(__name__, 'js/src/capa/imageinput.js'),
             resource_string(__name__, 'js/src/capa/schematic.js'),

common/lib/xmodule/xmodule/js/src/sequence/display.coffee

@@ -216,7 +216,7 @@ class @Sequence
         widget_placement: widget_placement
 
       # On Sequence change, destroy any existing polling thread
-      # for queued submissions, see ../capa/display.coffee
+      # for queued submissions, see ../capa/display.js
       if window.queuePollerID
         window.clearTimeout(window.queuePollerID)
         delete window.queuePollerID