Added href attribute to <use> tags with deprecated xlinkHref attribute.

src/core/components/auth/authorization-popup.jsx

@@ -23,7 +23,7 @@ export default class AuthorizationPopup extends React.Component {
                 <h3>Available authorizations</h3>
                 <button type="button" className="close-modal" onClick={ this.close }>
                   <svg width="20" height="20">
-                    <use xlinkHref="#close" />
+                    <use href="#close" xlinkHref="#close" />
                   </svg>
                 </button>
               </div>

src/core/components/auth/authorize-btn.jsx

@@ -25,7 +25,7 @@ export default class AuthorizeBtn extends React.Component {
         <button className={isAuthorized ? "btn authorize locked" : "btn authorize unlocked"} onClick={ this.onClick }>
           <span>Authorize</span>
           <svg width="20" height="20">
-            <use xlinkHref={ isAuthorized ? "#locked" : "#unlocked" } />
+            <use href={ isAuthorized ? "#locked" : "#unlocked" } xlinkHref={ isAuthorized ? "#locked" : "#unlocked" } />
           </svg>
         </button>
       { showPopup && <AuthorizationPopup /> }

src/core/components/auth/authorize-operation-btn.jsx

@@ -24,7 +24,7 @@ export default class AuthorizeOperationBtn extends React.Component {
     return (
       <button className={isAuthorized ? "authorization__btn locked" : "authorization__btn unlocked"} onClick={ this.onClick }>
         <svg width="20" height="20">
-          <use xlinkHref={ isAuthorized ? "#locked" : "#unlocked" } />
+          <use href={ isAuthorized ? "#locked" : "#unlocked" } xlinkHref={ isAuthorized ? "#locked" : "#unlocked" } />
         </svg>
       </button>