After almost four years of litigation between TBS late-night talk show host Conan O’Brien and comedy writer Alex Kaseberg over five jokes Kaseberg alleged Conan and his writing team stole from Kaseberg’s Twitter feed, the clashing comics finally reached a settlement.  Though the terms of the agreement are confidential, both parties seem relieved the case has finally run its course. O’Brien told Variety that the dispute ended “amicably.”  He added, “I stand by every word…