Flights => Missions on navbar

Author: mrpollo

src/views/directives/navbar.html

@@ -35,7 +35,7 @@
     <div class="container">
         <div id="navigation" class="center-block">
             <a href="/"         class="btn btn-default navbar-btn user-navbar">Map</a>
-            <a href="/mission"  class="btn btn-default navbar-btn user-navbar">Flights</a>
+            <a href="/mission"  class="btn btn-default navbar-btn user-navbar">Missions</a>
             <a href="/about"    class="btn btn-default navbar-btn user-navbar">About</a>
         </div>
     </div>