minor ui fixes

html/ui/index.html

@@ -112,7 +112,7 @@
         <template v-for="k,i in state.Store.KeyNames">{{i?", ":""}}<code @click="forms.delKey.name=k">{{k}}</code></template>.</p>
   </form>
 
-<template v-if="state.HostTemplates">
+<template v-if="state.HostTemplates && state.HostTemplates.length">
   <h3>Hosts from template</h3>
   <form @submit="hostFromTemplateAdd" action="">
       <p>Add a host from template instance:</p>