UI: rename extensions button (#1535)

* UI: rename extensions button

* change JS

lnbits/core/templates/core/extensions.html

@@ -11,7 +11,7 @@
         color="primary"
         type="a"
         :href="['/install?usr=', user.id].join('')"
-        >Add Extensions</q-btn
+        >Manage Extensions</q-btn
       >
     </p>
   </div>

lnbits/core/templates/core/install.html

@@ -2,7 +2,7 @@
 %} {{ window_vars(user, extensions) }}{% block page %}
 <div class="row q-col-gutter-md q-mb-md">
   <div class="col-sm-9 col-xs-12">
-    <p class="text-h4 gt-sm">Add Extensions</p>
+    <p class="text-h4 gt-sm">Manage Extensions</p>
   </div>
 
   <div class="col-sm-3 col-xs-12 q-ml-auto">

lnbits/static/js/components.js

@@ -145,7 +145,7 @@ Vue.component('lnbits-extension-list', {
           <q-icon name="playlist_add" color="grey-5" size="md"></q-icon>
         </q-item-section>
         <q-item-section>
-          <q-item-label lines="1" class="text-caption">Add Extensions</q-item-label>
+          <q-item-label lines="1" class="text-caption">Manage Extensions</q-item-label>
         </q-item-section>
       </q-item>
     </q-list>