Distribute src/assets

scripts/prepare-sources.js

@@ -1,5 +1,6 @@
 const fs = require('fs');
 const path = require('path');
+const {copyRecursively} = require("./_functions");
 
 // These folders must exist for nodemon not to loop indefinitely.
 [
@@ -17,5 +18,10 @@ if (!fs.existsSync(symlink)) {
     fs.symlinkSync(path.resolve('dist/common'), symlink);
 }
 
+// Copy assets
+fs.readdirSync('src/assets').forEach(file => {
+    copyRecursively(path.join('src/assets', file), 'dist/assets');
+});
+
 // Copy package.json
 fs.copyFileSync('package.json', 'dist/package.json');