fix issue #51: add link on the logo

src/Logo.vue

@@ -16,7 +16,10 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 -->
 <template>
     <div v-bind:class="classes">
-        <img v-bind:src="image">
+        <a v-if="link !== null" v-bind:href="link">
+            <img v-bind:src="image">
+        </a>
+        <img v-else v-bind:src="image">
     </div>
 </template>
 
@@ -28,6 +31,10 @@ export default {
             type: String,
             required: true
         },
+        link: {
+            type: String,
+            required: false
+        },
         classes: {
             type: Object,
             required: true