Translations:New Template System in LS3.x/91/en

• layout_global.twig : render the pages for survey taking
• layout_survey_list.twig : render the survey list (if this theme is set as default)
• layout_errors.twig : used to render errors that block survey rendering. ( wrong survey id, empty group in preview group, etc.)
• layout_user_forms.twig: renders the user forms such as: token (survey participant), and register.
• layout_print.twig : used to print the survey to pdf
• layout_printanswers.twig: print the answers