Written by DCist contributor Nathaniel Poteet. Photos by Ryan Holloway for DCist. “Woo! I’m so glad it’s Friday,” quipped a slightly inebriated audience member just minutes before the Ting Tings took the stage on a balmy Tuesday evening at the 9:30 Club. The British duo’s set was short; only eight songs from their first full length album, plus an encore of “We Started Nothing.” Their album, which bears the same title, was released in the…