minor errata

frontend/src/classes/Deck.js

@@ -205,6 +205,7 @@ export default class {
         count: elements[element]
       })
 
+    retval = retval.filter(element => element.count > 0)
     retval.sort((element_l, element_r) => element_r.count - element_l.count)
 
     return retval

frontend/src/components/Deck.vue

@@ -15,11 +15,12 @@
       </v-layout>
     </template>
 
-    <v-alert v-if="!editing" :value="deck.note" type="info">
+    <template v-if="!editing">
+      <v-alert :value="deck.note" type="info">
         {{ deck.note }}
       </v-alert>
 
-    <v-container v-if="!editing" style="position: relative" grid-list-md fluid>
+      <v-container style="position: relative" grid-list-md fluid>
         <v-layout row wrap>
           <v-flex v-for="part in deck.parts()" :key="part.heading" xs12 sm6 md4>
             <v-card>
@@ -41,9 +42,11 @@
           </v-btn>
 
           <v-dialog v-model="deleting" persistent>
-          <v-btn fab absolute bottom left slot="activator">
+            <template v-slot:activator="{ on }">
+              <v-btn fab absolute bottom left v-on="on">
                 <v-icon>delete</v-icon>
               </v-btn>
+            </template>
 
             <v-card>
               <v-card-title class="headline">
@@ -51,7 +54,8 @@
               </v-card-title>
 
               <v-card-text>
-              Are you sure you want to delete this deck? This cannot be undone.
+                Are you sure you want to delete this deck? This cannot be
+                undone.
               </v-card-text>
 
               <v-card-actions>
@@ -75,6 +79,7 @@
           </v-dialog>
         </v-layout>
       </v-container>
+    </template>
 
     <DeckEditor v-if="editing" :deck="deck" @save="save_deck">
       <v-btn color="error" @click.native="editing = false">

frontend/src/components/DeckList.vue

@@ -67,6 +67,7 @@ export default {
         result.push(deck)
       }
 
+      result.sort((deck_l, deck_r) => deck_l.name.localeCompare(deck_r.name))
       return result
     }
   },

frontend/src/components/forms/FormDialog.vue

@@ -1,8 +1,10 @@
 <template>
   <v-dialog v-model="dialog">
-    <v-btn flat slot="activator">
+    <template v-slot:activator="{ on }">
+      <v-btn flat v-on="on">
         {{ buttonText }}
       </v-btn>
+    </template>
 
     <v-card>
       <v-snackbar