Hartford Courant: Frankly, some people may be tired of giving up chocolate, vodka, fried chicken or poker for the 40 days of Lent. But sacrificing a lightbulb, or higher temperature on the thermostat? Maybe finally spurning plastic bags for reusable organic cotton totes? As many of the Christian faith begin Lent on Wednesday, one option — the “carbon fast” — could be as basic as unplugging your cellphone charger when not in use. Repentance, reflection and self-discipline are supposed to be …