Demo project cleanup

Removed all obsolete stuff from the ng2 demo project

demo-shell-ng2/app/js/dropZone.js

@@ -1,60 +0,0 @@
-function dropZone(opts) {
-  var options = opts || {},
-      element = opts.element || document.createElement('div'),
-      minHeight = opts.minHeight || '20px',
-      maxHeight = opts.maxHeight || '100px';
-  
-  element.className = 'drop-zone';
-  element.style.height = minHeight;
-  element.textAlign = 'center';
-  
-  // Event listener for when the dragged element enters the drop zone.
-  element.addEventListener('dragenter', function (e) {
-    this.classList.add('over');
-    this.style.height = maxHeight;
-  });
-  
-  // Event listener for when the dragged element is over the drop zone.
-  element.addEventListener('dragover', function (e) {
-    if (e.preventDefault) {
-      e.preventDefault();
-    }
-    e.dataTransfer.dropEffect = 'move';
-    return false;
-  });
-  
-  // Event listener for when the dragged element leaves the drop zone.
-  element.addEventListener('dragleave', function (e) {
-    this.classList.remove('over');
-    this.style.height = minHeight;
-  });
-  
-  // Event listener for when the dragged element dropped in the drop zone.
-  element.addEventListener('drop', function (e) {
-    if (e.preventDefault) e.preventDefault();
-    if (e.stopPropagation) e.stopPropagation();
-    
-    this.classList.remove('over');
-    this.style.height = minHeight;
-    
-    if (typeof opts.onDrop === 'function') {
-      var dropData = e.dataTransfer.getData('text');
-      var payload = {};
-      if (dropData) {
-        try {
-          payload = JSON.parse(dropData);
-        } catch (err) {
-          payload = {};
-        }
-      } 
-      
-      opts.onDrop(this, payload);
-    }
-    
-    return false;
-  });
-  
-  return {
-    "element": element
-  };
-}