fix button txp details

public/views/modals/txp-details.html

@@ -108,7 +108,7 @@
     <div class="large-5 medium-5 small-6 columns">
       <button class="button outline dark-gray m0 expand" ng-click="hideTxInfo = true; reject(tx);" 
         ng-disabled="loading">
-        <i class="fi-x icon-sign x"></i>  
+        <i class="fi-x"></i>  
         <span translate>Reject</span>
       </button>
     </div>
@@ -116,7 +116,7 @@
       <button class="button primary m0 expand" ng-click="hideTxInfo = true; sign(tx)" 
         ng-style="{'background-color':color}"  
         ng-disabled="loading">
-        <i class="fi-check icon-sign check"></i>  
+        <i class="fi-check"></i>  
         <span translate>Sign</span>
       </button>
     </div>

src/css/main.css

@@ -597,7 +597,6 @@ button.outline:hover,
 button.outline:focus {
   border-radius: 3px;
   background: transparent;
-  text-transform: none;
 }
 
 .button.outline.dark-gray,