user can remove overlays

frontend-js/src/main/js/gui/admin/EditProjectDialog.js

@@ -305,6 +305,15 @@ EditProjectDialog.prototype._createOverlayTable = function() {
     });
   });
 
+  $(overlaysTable).on("click", "[name='downloadSource']", function() {
+    var button = this;
+    return ServerConnector.getOverlaySourceDownloadUrl({
+      overlayId : $(button).attr("data")
+    }).then(function(url) {
+      return self.downloadFile(url);
+    }).then(null, GuiConnector.alert);
+  });
+
   return overlaysTable;
 };
 
@@ -327,13 +336,18 @@ EditProjectDialog.prototype.createUsersTabContent = function() {
 };
 
 EditProjectDialog.prototype.init = function() {
+  var self = this;
+  return self.refreshOverlays().then(function() {
+    $(window).trigger('resize');
+  });
+};
+
+EditProjectDialog.prototype.refreshOverlays = function() {
   var self = this;
   return ServerConnector.getOverlays({
     projectId : self.getProject().getProjectId()
   }).then(function(overlays) {
     return self.setOverlays(overlays);
-  }).then(function() {
-    $(window).trigger('resize');
   });
 };
 
@@ -460,5 +474,13 @@ EditProjectDialog.prototype.saveOverlay = function(overlayId) {
 
   return ServerConnector.updateOverlay(overlay);
 };
+EditProjectDialog.prototype.removeOverlay = function(overlayId) {
+  var self = this;
+  return ServerConnector.removeOverlay({
+    overlayId : overlayId
+  }).then(function() {
+    return self.refreshOverlays();
+  });
+};
 
 module.exports = EditProjectDialog;