Add Mistymire support

res/data/levels.js

   cores: [{left: 230, top: 134}, {left: 234, top: 444}, {left: 413, top: 419}, {left: 38, top: 569}]
  },
 
+ {}, // Uber monsterfest
+ {}, // Tree of life
+
+ {
+  name: 'Mistymire Forest',
+  minimap: 'res/images/minimaps/Mistymire.png',
+  image: 'http://placehold.it/200x100',
+  du: 140,
+  offsets: {left: 170, top: 50},
+  scale: {left: 1.1, top: 1.1},
+  towerscale: 0.5,
+  cores: [{left: 129, top: 354}, {left: 241, top: 242}, {left: 318, top: 284}, {left: 299, top: 404}]
+ },
+
 ];

res/js/viewer.js

   $.each(levels, function(key) {
    var name = this.name;
 
-   $('<button>')
+   name && $('<button>')
     .append($('<img>').attr('src', this.image))
     .append($('<p>').text(name))
     .click(function() {
 
   var sel = $('select[name=search_map]');
   $.each(levels, function(key) {
-   $('<option>').val(key + 1).text(this.name).appendTo(sel);
+   this.name && $('<option>').val(key + 1).text(this.name).appendTo(sel);
   });
 
   function showSearch() {
   cores: [{left: 230, top: 134}, {left: 234, top: 444}, {left: 413, top: 419}, {left: 38, top: 569}]
  },
 
+ {}, // Uber monsterfest
+ {}, // Tree of life
+
+ {
+  name: 'Mistymire Forest',
+  minimap: 'res/images/minimaps/Mistymire.png',
+  image: 'http://placehold.it/200x100',
+  du: 140,
+  offsets: {left: 170, top: 50},
+  scale: {left: 1.1, top: 1.1},
+  towerscale: 0.5,
+  cores: [{left: 129, top: 354}, {left: 241, top: 242}, {left: 318, top: 284}, {left: 299, top: 404}]
+ },
+
 ];
 var towers = {
 

res/js/viewer/viewer.js

   $.each(levels, function(key) {
    var name = this.name;
 
-   $('<button>')
+   name && $('<button>')
     .append($('<img>').attr('src', this.image))
     .append($('<p>').text(name))
     .click(function() {
 
   var sel = $('select[name=search_map]');
   $.each(levels, function(key) {
-   $('<option>').val(key + 1).text(this.name).appendTo(sel);
+   this.name && $('<option>').val(key + 1).text(this.name).appendTo(sel);
   });
 
   function showSearch() {