When Gov. Kelly Ayotte pulled the plug on plans to sell land along I-95 and create a state-owned welcome center in Hampton, she called it a “gateway to our state that should reflect the charm and beauty of New Hampshire — not the New Jersey turnpike.” But does she want it to look like the Mass Pike instead? Two companies are competing for the contract to develop and operate the welcome center. One is the locally owned Common Man Roadside — a spi…