Translations:New Template System in LS3.x/58/es

La manera fácil: usando Google Font CDN
Bootswatch Survey Theme usa Google Font CDN. Echemos un vistazo a cómo funciona: https://github.com/LimeSurvey/LimeSurvey/blob/70a1d99cd2ebe411597231a8bc746b4ca9e19584/themes/survey/bootswatch/css/variations/flatly.min.css