buy flow rename and fixes

www/views/includes/clickToAccept.html

@@ -1,4 +1,4 @@
-<button class="click-to-accept__button button button-standard button-primary" ng-class="{disable: sendStatus}">
+<button ng-disabled="!wallet" class="click-to-accept__button button button-standard button-primary" ng-class="{disable: sendStatus}">
   <span ng-if="!sendStatus">
     <ng-transclude></ng-transclude>
   </span>

www/views/includes/slideToAcceptSuccess.html

@@ -3,7 +3,7 @@
   ng-class="{'fill-screen': fillScreen}">
 </div>
 
-<div class="slide-success__content">
+<div ng-disabled="wallet" class="slide-success__content">
   <img src="img/onboarding-success.svg" ng-class="{reveal: fillScreen}">
   <div class="slide-success__content__header" ng-class="{reveal: fillScreen}">
     <ng-transclude>Payment Sent</ng-transclude>

www/views/includes/walletSelector.html

@@ -1,6 +1,6 @@
 <action-sheet action-sheet-show="show" class="wallet-selector">
   <img class="back-arrow" src="img/icon-back-arrow.svg" ng-click="hide()">
-  <div class="header">Send from</div>
+  <div class="header">{{title}}</div>
   <a
     ng-repeat="w in wallets track by $index"
     class="item item-icon-left item-big-icon-left item-icon-right wallet"