Add Native SSL Support and Tests
router.go: Add native SSL support.
config.go: Add options for native SSL Support
config_test.go: Add tests for Native SSL Support in configuration
utils_sanitize.go: Add native SSL support by choosing between http/https
utils_sanitize_test.go: Add tests to verify SSL support
Native SSL support added. 2 new properties required for Native SSL:
COMMENTO_SSL=true enables native SSL. Default is
COMMENTO_SSL=true then COMMENTO_SSL_CERT and COMMENTO_SSL_KEY must be set to the path to a valid SSL Certificate and Key pair.