Jennifer Celotta talks to Cody Brotter about writing jokes for “Bridesmaids” and “Spy” alongside Paul Feig, writing jokes for Rainn Wilson at the Film Independent Spirit Awards (and winning a WGA Award for it), having her “Office” episode directed by Harold Ramis, writing a feature length film (with Marc Forster attached), interning at the TV Academy Foundation, and getting her Hollywood start at “Home Improvement.”