Don't generate comment for empty description (#659)

Author: anna-zhernovkova

templates/component.tst

@@ -60,9 +60,9 @@ const CUSTOM_VALUE_ACCESSOR_PROVIDER = {
     multi: true
 };<#?#>
 
-/**
+<#? it.description #>/**
  * <#= it.description #>
- */
+ */<#?#>
 @Component({
     selector: '<#= it.selector #>',
     template: '<#? it.isTranscludedContent #><ng-content></ng-content><#?#>',<#? it.isViz #>
@@ -81,10 +81,10 @@ export class <#= it.className #>Component extends <#= baseClass #> <#? implement
     @ContentChild(DxValidatorComponent)
     validator: DxValidatorComponent;
 <#?#>
-<#~ it.properties :prop:i #>
+<#~ it.properties :prop:i #><#? prop.description #>
     /**
      * <#= prop.description #>
-     */
+     */<#?#>
     @Input()
     get <#= prop.name #>(): <#= prop.type #> {
         return this._getOption('<#= prop.name #>');
@@ -94,10 +94,10 @@ export class <#= it.className #>Component extends <#= baseClass #> <#? implement
     }<#? i < it.properties.length-1 #>
 
 <#?#><#~#>
-<#~ it.events :event:i #>
+<#~ it.events :event:i #><#? event.description #>
     /**
      * <#= event.description #>
-     */
+     */<#?#>
     @Output() <#= event.emit #>: <#= event.type #>;<#? i < it.events.length-1 #>
 <#?#><#~#>