Update to modern slot syntax

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/components/Account/ActorAutoComplete.vue

@@ -10,7 +10,7 @@
     @select="handleSelect"
     @infinite-scroll="getAsyncData"
   >
-    <template slot-scope="props">
+    <template #default="props">
       <div class="media">
         <div class="media-left">
           <img

js/src/components/Admin/Followers.vue

@@ -78,7 +78,7 @@
         ></b-table-column
       >
 
-      <template slot="detail" slot-scope="props">
+      <template #detail="props">
         <article>
           <div class="content">
             <strong>{{ props.row.actor.name }}</strong>

js/src/components/Admin/Followings.vue

@@ -103,7 +103,7 @@
         ></b-table-column
       >
 
-      <template slot="detail" slot-scope="props">
+      <template #detail="props">
         <article>
           <div class="content">
             <strong>{{ props.row.targetActor.name }}</strong>

js/src/components/Event/AddressAutoComplete.vue

@@ -12,7 +12,7 @@
         expanded
         @select="updateSelected"
       >
-        <template slot-scope="{ option }">
+        <template #default="{ option }">
           <b-icon :icon="option.poiInfos.poiIcon.icon" />
           <b>{{ option.poiInfos.name }}</b
           ><br />