Enhance template system, fix editor not to scroll sideways on text edit.

save templates, will save template with given slide name and there is
now a dropdown menu to load template from. To remove template, just remove
template.json from /data

modules/admin.js

@@ -439,16 +439,17 @@ class admin {
             socket.on('admin.editSlide', function (data) {
                 let bundle = self.bundleManager.getBundle(data.bundleName);
                 let bundleData = bundle.getBundleData();
+                let templateData = {};
                 let json = "{}";
                 if (fs.existsSync("./data/template.json")) {
-                    json = fs.readFileSync("./data/template.json").toString();
+                    templateData = JSON.parse(fs.readFileSync("./data/template.json").toString());
                 }
-                let slide = {displayTime: null};
+                let slide = { displayTime: null };
                 if (data.fileName) {
                     json = bundle.getSlideJsonFile(data.fileName);
                     slide = bundle.findSlideByUuid(data.fileName);
                 }
-                socket.emit("callback.edit", {bundleData: bundleData, slideData: slide, json: json});
+                socket.emit("callback.edit", {bundleData: bundleData, slideData: slide, json: json, templates: templateData});
             });
 
             /** rename **/
@@ -474,8 +475,15 @@ class admin {
             });
 
             socket.on('edit.saveTemplate', function (data) {
+                let templates = {};
+                console.log(data.name);
+
+                if (fs.existsSync("./data/template.json")) {
+                    templates = JSON.parse(fs.readFileSync("./data/template.json").toString());
+                }                
+                templates[data.name] = data.json;
                 try {
-                    fs.writeFileSync("./data/template.json", JSON.stringify(data.json));
+                    fs.writeFileSync("./data/template.json", JSON.stringify(templates));
                 } catch (e) {
                     cli.error(e, "save template");
                 }

modules/websocket.js

@@ -36,7 +36,7 @@ module.exports = function (pluginManager, io, dispatcher) {
         cli.error("data directory (./data) is not writable", err);
         process.exit(1);
     }
-
+    
     try {
         fs.accessSync("./tmp", fs.W_OK);
         cli.success("temp directory (./tmp) is writable ");