In its seventh week out, Disney’s animated musical treat “Frozen” tops the box office, leading off 2014 with another powerful reminder of the market for top quality family movies.  The story of the sister princesses did not just beat out the only new release last weekend, the “Paranormal Activity” spin-off “The Marked Ones.”  It made more money than high-profile (and R-rated) films featured in all of the year’s “best” lists, “The Wolf of Wall Street” and “American Hustle,” the R-rated comedy “Anchorman 2,” and the second installments of franchise series “Hunger Games” and “Hobbit.”  I enjoyed all of those films, but I’m always very happy to see this kind of support for wonderful films that are family-friendly — meaning that they are just as enjoyable for every age.  Hollywood, are you listening?