Allow "data:" URLs to be played in app/website media players.

E.g: src="data:video/mp4;base64,VideoContentEncodedInBase64GoesHere"

src/main/java/org/qortal/arbitrary/ArbitraryDataRenderer.java

@@ -131,7 +131,7 @@ public class ArbitraryDataRenderer {
                 byte[] data = Files.readAllBytes(Paths.get(filePath)); // TODO: limit file size that can be read into memory
                 HTMLParser htmlParser = new HTMLParser(resourceId, inPath, prefix, usePrefix, data, qdnContext, service, identifier, theme);
                 htmlParser.addAdditionalHeaderTags();
-                response.addHeader("Content-Security-Policy", "default-src 'self' 'unsafe-inline' 'unsafe-eval'; media-src 'self' blob:; img-src 'self' data: blob:;");
+                response.addHeader("Content-Security-Policy", "default-src 'self' 'unsafe-inline' 'unsafe-eval'; media-src 'self' data: blob:; img-src 'self' data: blob:;");
                 response.setContentType(context.getMimeType(filename));
                 response.setContentLength(htmlParser.getData().length);
                 response.getOutputStream().write(htmlParser.getData());