Issue #1898466 by joelpittet, webthingee, lokapujya, pplantinga, lokeoke, richardj, bdragon, steveoliver, ry5n, tlattimore, Cottser, siccababes, jenlampton, evanbarter, rodrigoaguilera, W1n5t0n45, drupalmonkey, ezeedub | c4rl: Update.module - Convert theme_ functions to Twig.

Issue #2009580 by pplantinga, Samvel, hussainweb, andypost, siccababes: Replace theme() with drupal_render() in image module.

Issue #1963476 by widukind, joelpittet, jenlampton, tlattimore, kattekrab, siccababes, adamcowboy: Datetime.module - Convert theme_ functions to Twig.