CORE-542 Script error when adding comment

@bmomberger-reciprocity The error in the story https://reciprocitylabs.atlassian.net/browse/CORE-542 happened because after cycle task group task was edited `val` here was a function. Do you have any idea why this is happening in some cases? Using Mustache.resolve seems to solve the issue (and I've added it to other computes just in case), but I'm not sure if it's the best solution.