Local officials are pairing with MindMixer, a startup that helps organizations and local governments gather ideas from their community, to launch a website aimed to get input from residents on drafting the town’s comprehensive plan. The plan will outline the town’s vision for growth over the next 10 to 20 years, and is the first of its kind in Watertown in the past two decades, officials said. The newly launched feedback website, www.envisionwatertowncompplan.com, allows residents to contribute new ideas, second or expand on ideas they like, and vote in an instant poll. They can also submit links, maps, photos, and videos to make their point when submitting ideas. The website can also be accessed in different languages by clicking “Select Language” in the left-hand column. A public forum to discuss the plan is slated for 7 p.m. May 20 at Watertown Middle School, 68 Waverly Ave. More information on the plan can also be found at www.vhb.com/watertowncompplan.