vweb: make mime_types a const

examples/vweb/index.html

@@ -0,0 +1 @@
+test <b>app</b>

vlib/vweb/tmpl/tmpl.v

@@ -35,14 +35,14 @@ _ := header
 //footer := \'footer\' 
 ') 
 	s.writeln(STR_START)
-	mut in_css := false 
+	mut in_css :=true// false 
 	for _line in lines {
 		line := _line.trim_space() 
 		if line == '<style>' {
 			in_css = true 
 		} 
 		else if line == '</style>' {
-			in_css = false 
+			//in_css = false 
 		} 
 		if line.contains('@if ') {
 			s.writeln(STR_END)

vlib/vweb/vweb.v

@@ -181,24 +181,24 @@ fn (ctx mut Context) parse_form(s string) {
 		}
 	}
 } 
+const ( 
+	mime_types = {
+		'.css': 'text/css; charset=utf-8', 
+		'.gif': 'image/gif', 
+		'.htm': 'text/html; charset=utf-8', 
+		'.html': 'text/html; charset=utf-8', 
+		'.jpg': 'image/jpeg', 
+		'.js': 'application/javascript', 
+		'.wasm': 'application/wasm', 
+		'.pdf': 'application/pdf', 
+		'.png': 'image/png', 
+		'.svg': 'image/svg+xml', 
+		'.xml': 'text/xml; charset=utf-8' 
+	} 
+) 
 
 fn (ctx mut Context) scan_static_directory(directory_path, mount_path string) {
-	// mime types
-	mut mime_types := map[string]string{}
-	mime_types['.css'] = 'text/css; charset=utf-8'
-	mime_types['.gif'] = 'image/gif'
-	mime_types['.htm'] = 'text/html; charset=utf-8'
-	mime_types['.html'] = 'text/html; charset=utf-8'
-	mime_types['.jpg'] = 'image/jpeg'
-	mime_types['.js'] = 'application/javascript'
-	mime_types['.wasm'] = 'application/wasm'
-	mime_types['.pdf'] = 'application/pdf'
-	mime_types['.png'] = 'image/png'
-	mime_types['.svg'] = 'image/svg+xml'
-	mime_types['.xml'] = 'text/xml; charset=utf-8'
-
 	files := os.ls(directory_path)
-
 	if files.len > 0 {
 		for file in files {			
 			mut ext := ''