remove tab select on fingerprint

src/components/Fingerprint.vue

@@ -16,7 +16,7 @@
 </style>
 <template>
     <span class="input-group-btn" v-if="fingerprint">
-        <button id="fingerprint" class="btn" type="button">
+        <button id="fingerprint" class="btn" type="button" tabindex="-1">
             <small class="hint--top" aria-label="fingerprint">
                 <i class="fa fa-fw" v-bind:class="[icon1]" v-bind:style="{ color: color1 }"></i>
                 <i class="fa fa-fw" v-bind:class="[icon2]" v-bind:style="{ color: color2 }"></i>