move issue journal reply to issue controller test, as each journalized controller will now use the render_reply journals helper to reply

Conflicts:
	app/controllers/issues_controller.rb
	app/controllers/journals_controller.rb
	app/helpers/journals_helper.rb
	app/views/issues/_history.rhtml
	lib/redmine/activity/fetcher.rb
	test/functional/issues_controller_test.rb
	test/test_helper.rb

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