Add settings test fixture cleanup

 On branch master

	modified:   manage.sh
Improve settings test fixture files.

 On branch master

	modified:   test/fixtures/settings/enginemill_global.ini
	modified:   test/fixtures/settings/enginemill_user.ini
	modified:   test/fixtures/settings/test_app_global.ini
	modified:   test/fixtures/settings/test_app_user.ini
	modified:   test/fixtures/test_settings_app/settings.ini
	modified:   test/settings_test.js
Add test for setting env vars.

 On branch master

	modified:   test/settings_test.js
WIP test loading settings

 On branch master

	modified:   index.js
	modified:   lib/index.js
	modified:   test/fixtures/settings/enginemill_global.ini
	modified:   test/fixtures/settings/test_app_global.ini
	modified:   test/fixtures/settings/test_app_user.ini
	modified:   test/fixtures/test_settings_app/settings.ini
	modified:   test/settings_test.js