add titles to mobile buttons

src/components/notifications/notifications.vue

@@ -27,6 +27,7 @@
             <button
               class="button-unstyled scroll-to-top-button"
               type="button"
+              :title="$t('general.scroll_to_top')"
               @click="scrollToTop"
             >
               <FALayers class="fa-scale-110 fa-old-padding-layer">

src/components/timeline/timeline.vue

@@ -12,6 +12,7 @@
         <button
           class="button-unstyled scroll-to-top-button"
           type="button"
+          :title="$t('general.scroll_to_top')"
           @click="scrollToTop"
         >
           <FALayers class="fa-scale-110 fa-old-padding-layer">
@@ -30,6 +31,7 @@
         >
           <button
             class="button-unstyled loadmore-button"
+            :title="loadButtonString"
             @click.prevent="showNewStatuses"
           >
             <FAIcon
@@ -42,6 +44,7 @@
         <div
           v-else-if="!embedded"
           class="loadmore-text faint veryfaint rightside-icon"
+          :title="$t('timeline.up_to_date')"
           @click.prevent
         >
           <FAIcon

src/i18n/en.json

@@ -84,6 +84,7 @@
     "yes": "Yes",
     "no": "No",
     "peek": "Peek",
+    "scroll_to_top": "Scroll to top",
     "role": {
       "admin": "Admin",
       "moderator": "Moderator"