Fix recommenders' bugs: template_lookup initialization, syntax error, and the incompatibility of the underscore library
Fix recommenders' bugs: template_lookup initialization, syntax error, and the incompatibility of the underscore library

jazkarta/edx-platform-for-isc,ampax/edx-platform-backup,kmoocdev/edx-platform,ampax/edx-platform-backup,appsembler/edx-platform,ampax/edx-platform-backup,marcore/edx-platform,jswope00/griffinx,cecep-edu/edx-platform,marcore/edx-platform,kmoocdev/edx-platform,jazkarta/edx-platform-for-isc,gymnasium/edx-platform,ampax/edx-platform-backup,dcosentino/edx-platform,jazkarta/edx-platform-for-isc,nttks/jenkins-test,kmoocdev/edx-platform,appsembler/edx-platform,nttks/jenkins-test,jswope00/griffinx,nttks/jenkins-test,dcosentino/edx-platform,gymnasium/edx-platform,jazkarta/edx-platform-for-isc,cecep-edu/edx-platform,kmoocdev/edx-platform,dcosentino/edx-platform,cecep-edu/edx-platform,nttks/jenkins-test,ampax/edx-platform-backup,cecep-edu/edx-platform,appsembler/edx-platform,dcosentino/edx-platform,jswope00/griffinx,marcore/edx-platform,marcore/edx-platform,dcosentino/edx-platform,nttks/jenkins-test,jswope00/griffinx,gymnasium/edx-platform,kmoocdev/edx-platform,cecep-edu/edx-platform,appsembler/edx-platform,jswope00/griffinx,jazkarta/edx-platform-for-isc,gymnasium/edx-platform