Translations:New Template System in LS3.x/95/en

In Vanilla's layout_global.twig, you'll see we use a variable called "include_content" to decide what to show https://github.com/LimeSurvey/LimeSurvey/blob/2398dda3b425da1a37d4611cd7963d39ac739987/themes/survey/vanilla/views/layout_global.twig#L114-L115