MM-9922 Don't show hovered URL for internal links

src/browser/components/HoveringURL.jsx

@@ -2,6 +2,10 @@ const React = require('react');
 const PropTypes = require('prop-types');
 
 function HoveringURL(props) {
+  if (props.targetURL.startsWith(props.currentTeamURL)) {
+    return <div/>;
+  }
+
   return (
     <div className='HoveringURL HoveringURL-left'>
       {props.targetURL}
@@ -10,6 +14,7 @@ function HoveringURL(props) {
 }
 
 HoveringURL.propTypes = {
+  currentTeamURL: PropTypes.string,
   targetURL: PropTypes.string,
 };
 

src/browser/components/MainPage.jsx

@@ -372,6 +372,7 @@ const MainPage = createReactClass({
             >
               <HoveringURL
                 key='hoveringURL'
+                currentTeamURL={this.props.teams[this.state.key].url}
                 targetURL={this.state.targetURL}
               />
             </CSSTransition>