Share a custom amount

www/views/customAmount.html

@@ -1,11 +1,20 @@
 <ion-view id="custom-amount" hide-tabs>
   <ion-nav-bar class="bar-royal">
+    <ion-nav-buttons side="primary">
+      <button class="button back-button button-clear" ng-click="close()" translate>
+        Close
+      </button>
+    </ion-nav-buttons>
     <ion-nav-title>
       {{'Custom Amount' | translate}}
     </ion-nav-title>
     <ion-nav-buttons side="secondary">
-      <button class="button no-border" ng-click="close()" translate>
-        Close
+      <button class="button-share ng-hide" ng-show="showShareButton" ng-click="shareAddress()">
+        <i class="icon" 
+          ng-class="{
+          'ion-ios-upload-outline': showShareButton == 'iOS', 
+          'ion-android-share-alt': showShareButton != 'iOS'
+          }"></i>
       </button>
     </ion-nav-buttons>
   </ion-nav-bar>
@@ -15,7 +24,7 @@
         <qrcode size="220" data="bitcoin:{{address + '?amount=' + amountBtc}}" color="#334"></qrcode>
       </div>
       <div class="info"> 
-        <div class="item single-line">
+        <div class="item single-line" copy-to-clipboard="address">
           <span class="label" translate>Address</span>
           <span class="item-note ellipsis">
             {{address}}