chore: added links to other external tools; changed design of the donation button

src/components/StationsView/StationStats.vue

@@ -8,7 +8,7 @@
 
     <button class="filter-button btn--filled btn--image" @click="toggleDropdown" ref="button">
       <img src="/images/icon-stats.svg" alt="Open filters icon" />
-      {{ $t('station-stats.stats-button') }}
+      <span>{{ $t('station-stats.stats-button') }}</span>
     </button>
 
     <transition name="dropdown-anim">
@@ -282,5 +282,9 @@ h1.stats-title img {
   h1.stats-title {
     text-align: center;
   }
+
+  .filter-button > span {
+    display: none;
+  }
 }
 </style>