Merge branch '324-generic-radios-link' into 'develop'

Resolve "Pages for radios "random", "favourites" and "less listened"  not showing up"

Closes #324

See merge request funkwhale/funkwhale!274

changes/changelog.d/324.bugfix

@@ -0,0 +1 @@
+Remove link to generic radios, since they don't have detail pages (#324)

front/src/components/radios/Card.vue

@@ -2,9 +2,12 @@
     <div class="ui card">
       <div class="content">
         <div class="header">
-          <router-link class="discrete link" :to="{name: 'library.radios.detail', params: {id: radio.id}}">
+          <router-link v-if="radio.id" class="discrete link" :to="{name: 'library.radios.detail', params: {id: radio.id}}">
             {{ radio.name }}
           </router-link>
+          <template v-else>
+            {{ radio.name }}
+          </template>
         </div>
         <div class="description">
           {{ radio.description }}