Partially overhauled content system's metadata handling, Fixed & Added tools, Added missing resources, Other minor fixes, Added index compiler

Update .gitignore, .htaccess, and 48 more files...

commons/strings/en/test.json

@@ -0,0 +1,7 @@
+{
+	"test.header.title": "Test Page",
+	"test.controls": "Debugging options",
+	"test.controls.borders": "Show/Hide borders",
+	"test.app.card.demo": "Application card",
+	"test.content.card.demo": "Content card"
+}