don't use a rake_tasks bundler group

it's nonstandard, and messes with spring

Change-Id: I6e9d4a663d5bfb94f58028613f70176eec23a637
Reviewed-on: https://gerrit.instructure.com/37827
Reviewed-by: Cameron Sutter <csutter@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>

Gemfile.d/i18n_tools_and_rake_tasks.rb

@@ -3,7 +3,7 @@ group :i18n_tools do
 
 end
 
-group :i18n_tools, :rake_tasks do
+group :i18n_tools, :development do
   gem 'i18n_tasks', :path => 'gems/i18n_tasks'
   gem 'handlebars_tasks', :path => 'gems/handlebars_tasks'
 end

Rakefile

@@ -12,7 +12,7 @@ end
 require 'rake'
 require 'rake/testtask'
 require 'rdoc/task'
-Bundler.require(:rake_tasks)
+Bundler.require(:i18n_tools)
 
 if CANVAS_RAILS2
   Dir["#{RAILS_ROOT}/gems/**/tasks/*.rake"].each { |ext| load ext }

gems/handlebars_tasks/lib/handlebars_tasks.rb

@@ -2,9 +2,6 @@ require "i18n_extraction"
 require "compass"
 require "sass/plugin"
 
-module HandlebarsTasks
-  require "handlebars_tasks/handlebars"
-  require "handlebars_tasks/ember_hbs"
-
-  require_relative "handlebars_tasks/railtie" if defined?(Rails) && CANVAS_RAILS3
-end
+require "handlebars_tasks/handlebars"
+require "handlebars_tasks/ember_hbs"
+require "handlebars_tasks/railtie" if defined?(Rails) && CANVAS_RAILS3