Fix the formatting of the enketo survey button

So that it looks proper

It centers the button and ensures that it takes up all the width of the item.
e-mission/e-mission-docs#727 (comment)
and
e-mission/e-mission-docs#727 (comment)

www/templates/survey/enketo/summary-trip-button.html

@@ -6,8 +6,8 @@
 </div>
 <!-- Buttons (if confirmed) -->
 <div class="row input-confirm-row">
-        <div ng-if="trip.userInput['SURVEY']" class="input-confirm-container col">
-            <button ng-click ="openPopover($event, trip, 'SURVEY')" class="button btn-input-confirm btn-input-confirm-green">
+        <div ng-if="trip.userInput['SURVEY']" class="input-confirm-container col" style="text-align: center;" >
+            <button ng-click ="openPopover($event, trip, 'SURVEY')" class="button btn-input-confirm btn-input-confirm-green" style="width: 100%;">
                 {{trip.userInput['SURVEY'].data.label}}
             </button>
         </div>
@@ -19,8 +19,8 @@
             </button>
         </div> -->
 <!-- Buttons (if not inferred or confirmed) -->
-        <div ng-if="!trip.userInput['SURVEY'] && !trip.finalInference['SURVEY']" class="input-confirm-container col">
-            <button ng-click ="openPopover($event, trip, 'SURVEY')" class="button btn-input-confirm btn-input-confirm-red" translate>
+        <div ng-if="!trip.userInput['SURVEY'] && !trip.finalInference['SURVEY']" class="input-confirm-container col" style="text-align: center;">
+            <button ng-click ="openPopover($event, trip, 'SURVEY')" class="button btn-input-confirm btn-input-confirm-red" style="width: 100%;" translate>
             {{'.choose-survey'}}
             </button>
     </div>