random mascot, removed framasoft logos (fixes #10)

src/components/Header.vue

@@ -4,12 +4,6 @@
     <b-navbar toggleable="lg">
       <b-navbar-brand to="/">
         <img alt="PeerTube" :src="buildImgUrl('brand-small.png')">
-
-        <div class="support">
-          <translate>developed by</translate>
-
-          <img alt="Framasoft" :src="buildImgUrl('framasoft-logo-text-small.png')">
-        </div>
       </b-navbar-brand>
 
       <b-navbar-toggle target="nav-collapse"></b-navbar-toggle>

src/views/Home.vue

@@ -281,7 +281,7 @@
           'mascot/oh.png',
           'mascot/happy.png'
         ],
-        currentMascot: 0
+        currentMascot: Math.floor(Math.random() * 4)
       }
     },