remove backbutton and adding finish button on complete view

src/js/controllers/feedback/complete.js

@@ -54,6 +54,7 @@ angular.module('copayApp.controllers').controller('completeController', function
 
     if (!$scope.fromSettings) {
       $ionicConfig.views.swipeBackEnabled(false);
+      $ionicNavBarDelegate.showBackButton(false);
     } else {
       $ionicNavBarDelegate.showBackButton(true);
       $ionicConfig.views.swipeBackEnabled(true);

src/sass/views/feedback/complete.scss

@@ -1,13 +1,5 @@
 #complete {
   background-color: #fff;
-  .close-button {
-    color: $dark-gray;
-    position: absolute;
-    top: 5px;
-    right: 10px;
-    padding: 15px;
-    font-size: 36px;
-  }
   .complete-layout {
     display: flex;
     flex-direction: column;

www/views/feedback/complete.html

@@ -3,9 +3,13 @@
     <ion-nav-back-button>
     </ion-nav-back-button>
     <ion-nav-title>{{'Share BitPay' | translate}}</ion-nav-title>
+    <ion-nav-buttons side="secondary">
+      <button ng-show="!fromSettings" class="button no-border" ng-click="close()" translate>
+        Finish
+      </button>
+    </ion-nav-buttons>
   </ion-nav-bar>
   <ion-content scroll="false" has-header="fromSettings">
-    <a class="close-button ng-hide" ng-show="!fromSettings" ng-click="close()"><i class="icon ion-ios-close-empty close-home-tip"></i></a>
     <div class="complete-layout">
       <div class="complete-layout__expand" ng-class="{'fade-in': !animate || socialsharing}">
         <div ng-show="fromSettings">