Fix module canvas backgrounds, clear dummy badges, add SVG upload, new template creation, and {jednotkova_cena} variable

src/lib/emailRenderer.ts

@@ -197,6 +197,10 @@ export function renderEmailHtml(campaign: NewsletterCampaign): string {
 </html>`;
 }
 
+export function renderSingleModuleHtml(m: any, campaign: NewsletterCampaign): string {
+  return renderModule(m, campaign);
+}
+
 function renderModule(m: any, campaign: NewsletterCampaign): string {
   switch (m.type) {
     case 'announcement':