When they say “it’s all about who you know in Hollywood,” that usually refers to a contact list filled with people in positions of power who can help you move up the ladder. But on Thursday, Fifth Season took over the picturesque terrace at its Lumen headquarters in West L.A. to set the stage for networking in another direction — laterally. The film and television production, financing, and global distribution studio opened doors to approximately 300 interns across 50 top Hollywood companies for its second annual Interntainment Night, which took place (by design) on National Intern Day. The showing marked a big jump from last year’s…