issue-1204 replaced the datepicker navigation links with buttons (Hacker0x01#1206)

Author: jontrainor

src/calendar.jsx

@@ -272,7 +272,7 @@ export default class Calendar extends React.Component {
       return;
     }
     return (
-      <a
+      <button
         className="react-datepicker__navigation react-datepicker__navigation--previous"
         onClick={this.decreaseMonth}/>
     );
@@ -297,7 +297,7 @@ export default class Calendar extends React.Component {
       classes.push("react-datepicker__navigation--next--with-today-button");
     }
 
-    return <a className={classes.join(" ")} onClick={this.increaseMonth} />;
+    return <button className={classes.join(" ")} onClick={this.increaseMonth} />;
   };
 
   renderCurrentMonth = (date = this.state.date) => {

src/stylesheets/datepicker.scss

@@ -90,12 +90,14 @@
 }
 
 .react-datepicker__navigation {
+  background: none;
   line-height: $datepicker__item-size;
   text-align: center;
   cursor: pointer;
   position: absolute;
   top: 10px;
   width: 0;
+  padding: 0;
   border: $datepicker__navigation-size solid transparent;
   z-index: 1;