The start of the school year brings with it the need plan for what is often considered the busiest time of the year — and yes, it can be a big job. As PC Mike Wendland reports, a number of useful apps can help you get a better handle on your day-to-day activities. Wunderlist is a simple to-do list and task manager app that helps you get stuff done. Whether you’re sharing a grocery list with a loved one, working on a project, or planning a vacation, Wunderlist makes it easy to capture, share and complete your to-dos. It syncs between your phone, tablet and computer, so you can access…