add style & title to geolocation button & geocoder

src/components/Map/Geocoder.vue

@@ -6,6 +6,7 @@
     <button
       class="button-geocoder"
       @click="toggleGeocoder"
+      title="Rechercher une adresse"
     >
       <i class="search icon" />
     </button>

src/components/Map/Geolocation.vue

@@ -3,6 +3,7 @@
     <button
       :class="['button-geolocation', { tracking }]"
       @click.prevent="toggleTracking"
+      title="Me localiser"
     >
       <i class="crosshairs icon" />
     </button>
@@ -55,6 +56,9 @@ button.button-geolocation {
   line-height: 1.15;
   cursor: pointer;
 }
+button.button-geolocation:hover {
+    background-color: #ebebeb;
+  }
 button.button-geolocation.tracking {
   background-color: rgba(255, 145, 0, 0.904);
   color: #fff;