FIx memory leak on model rendering (#1695)

FIx memory leak on model rendering

src/js/model.js

@@ -144,3 +144,8 @@ Model.prototype.resize = function () {
 
     this.render();
 };
+
+Model.prototype.dispose = function () {
+    this.renderer.forceContextLoss();
+    this.renderer.dispose();
+};

src/js/tabs/pid_tuning.js

@@ -1729,6 +1729,7 @@ TABS.pid_tuning.cleanup = function (callback) {
 
     if (self.model) {
         $(window).off('resize', $.proxy(self.model.resize, self.model));
+        self.model.dispose();
     }
 
     $(window).off('resize', $.proxy(this.updateRatesLabels, this));

src/js/tabs/receiver.js

@@ -605,6 +605,7 @@ TABS.receiver.cleanup = function (callback) {
     $(window).off('resize', this.resize);
     if (this.model) {
         $(window).off('resize', $.proxy(this.model.resize, this.model));
+        this.model.dispose();
     }
 
     this.keepRendering = false;

src/js/tabs/setup.js

@@ -341,6 +341,7 @@ TABS.setup.renderModel = function () {
 TABS.setup.cleanup = function (callback) {
     if (this.model) {
         $(window).off('resize', $.proxy(this.model.resize, this.model));
+        this.model.dispose();
     }
 
     if (callback) callback();