Display a warning for binary tiddlers in view mode

The base64 data is currently parsed as wikitext, which is slow and unhelpful

We already display the same warning for binary tiddlers in edit mode.

boot/boot.js

@@ -2002,6 +2002,7 @@ $tw.boot.startup = function(options) {
 	$tw.utils.registerFileType("text/x-bibtex","utf8",".bib",{deserializerType:"application/x-bibtex"});
 	$tw.utils.registerFileType("application/x-bibtex","utf8",".bib");
 	$tw.utils.registerFileType("application/epub+zip","base64",".epub");
+	$tw.utils.registerFileType("application/octet-stream","base64",".octet-stream");
 	// Create the wiki store for the app
 	$tw.wiki = new $tw.Wiki();
 	// Install built in tiddler fields modules

core/modules/parsers/binaryparser.js

@@ -0,0 +1,29 @@
+/*\
+title: $:/core/modules/parsers/binaryparser.js
+type: application/javascript
+module-type: parser
+
+The video parser parses a video tiddler into an embeddable HTML element
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var BINARY_WARNING_MESSAGE = "$:/core/ui/BinaryWarning";
+
+var BinaryParser = function(type,text,options) {
+	this.tree = [{
+		type: "transclude",
+		attributes: {
+			tiddler: {type: "string", value: BINARY_WARNING_MESSAGE}
+		}
+	}];
+};
+
+exports["application/octet-stream"] = BinaryParser;
+
+})();
+

core/modules/wiki.js

@@ -785,6 +785,14 @@ exports.initParsers = function(moduleType) {
 			}
 		}
 	});
+	// Use the generic binary parser for any binary types not registered so far
+	if($tw.Wiki.parsers["application/octet-stream"]) {
+		Object.keys($tw.config.contentTypeInfo).forEach(function(type) {
+			if(!$tw.utils.hop($tw.Wiki.parsers,type) && $tw.config.contentTypeInfo[type].encoding === "base64") {
+				$tw.Wiki.parsers[type] = $tw.Wiki.parsers["application/octet-stream"];
+			}
+		});		
+	}
 };
 
 /*
@@ -847,7 +855,7 @@ exports.parseTextReference = function(title,field,index,options) {
 	}
 	if(field === "text" || (!field && !index)) {
 		if(tiddler && tiddler.fields) {
-			return this.parseText(tiddler.fields.type || "text/vnd.tiddlywiki",tiddler.fields.text,options);			
+			return this.parseText(tiddler.fields.type,tiddler.fields.text,options);			
 		} else {
 			return null;
 		}