Lightning Component For Contact Support Button

ContactSupport.cmp

<aura:component implements="forceCommunity:availableForAllPageTypes">
		<aura:attribute name="supportURL" type="string" default="/s/contactsupport"/>
		<ui:button aura:id="button" buttonTitle="Contact Support" label="Contact Support" press="{!c.navigate}" class="uiButton forceCommunityAskCommunity"/>
</aura:component>

ContactSupport.design

<design:component>
   <design:attribute name="supportURL" label="Support URL" description="Please add support URL for the button" />
</design:component>

ContactSupportController.js

({

navigate : function(component, event, helper) {

	    //Find the text value of the component with aura:id set to "address"
	    var address = component.get("v.supportURL");
	    var urlEvent = $A.get("e.force:navigateToURL");
	    urlEvent.setParams({
	      "url": address,
	      "isredirect" :false
	    });
	    urlEvent.fire();
	}

})