Add app.storage wrapper for handling localStorage

web/src/app/js/app.js

@@ -84,6 +84,25 @@ app.template = {
 	},
 }
 
+app.storage = {
+	_init: function() {
+		if (localStorage['fedilove'] === undefined)
+			localStorage['fedilove'] = '{}';
+	},
+	get: function(key) {
+		app.storage._init();
+		const js = JSON.parse(localStorage['fedilove']);
+		return js[key];
+	},
+	set: function(key, value) {
+		app.storage._init();
+		const js = JSON.parse(localStorage['fedilove']);
+		js[key] = value;
+		localStorage['fedilove'] = JSON.stringify(js);
+		return true;
+	},
+};
+
 app.overlay = {
 	hideAll: function() {
 		document.querySelectorAll('.overlay')