Fixed issue #16154: Not all files imported with custom question theme (…

…#2409)

Co-authored-by: encuestabizdevgit <devgit@encuesta.biz>

application/config/config-defaults.php

@@ -91,7 +91,7 @@
 
 // Please be very careful if you want to allow SVG files - there are several XSS dangerous security issues
 $config['allowedthemeimageformats'] = 'gif,ico,jpg,png'; // Image file types allowed to be uploaded in the themes section.
-$config['allowedthemeuploads'] = 'css,js,map,json,eot,otf,ttf,woff,txt,md,xml,woff2,twig'; // Other file types allowed to be uploaded in the themes section.
+$config['allowedthemeuploads'] = 'css,js,map,json,eot,otf,ttf,woff,txt,md,xml,woff2,twig,lss,lsa,lsq,lsg'; // Other file types allowed to be uploaded in the themes section.
 $config['allowedfileuploads'] = [
     //Documents
     'xls', 'doc', 'xlsx', 'docx', 'odt', 'ods', 'pdf',