Improve logging performance by using functions

Improve logging performance by using functions to delay when complex
strings are created until after the current logging level has been
checked to ensure that log statement is actually going to be printed.
There are many places where very complex objects are printed at lower
logging levels which this avoids.

src/scripts/controllers/base_controller.coffee

@@ -36,7 +36,7 @@ module.exports = class BaseController extends Backbone.View
         return child
 
     refresh: ->
-        logger.verbose "#{this} refreshing"
+        logger.verbose => "#{this} refreshing"
 
     routeLinkClick: (event)->
         href = $(event.currentTarget).attr 'href'
@@ -91,10 +91,10 @@ module.exports = class BaseController extends Backbone.View
         data = (@model?.toHash? and @model.toHash()) or @model or {}
 
         if not @_template?
-            logger.error "Default render called for #{@constructor.name} without a template"
+            logger.error => "Default render called for #{@constructor.name} without a template"
             return this
 
-        logger.verbose "#{this} rendering with data: #{data}"
+        logger.verbose => "#{this} rendering with data: #{data}"
         @onWillRender()
         $oldEl = @$el
         $newEl = Backbone.$(@_template(data))