Small visual tweaks to various auth views (#3238)

InvenTree/templates/account/email_confirm.html

@@ -17,7 +17,10 @@
 
 <form method="post" action="{% url 'account_confirm_email' confirmation.key %}">
 {% csrf_token %}
-    <button type="submit" class="btn btn-primary btn-block">{% trans 'Confirm' %}</button>
+    <hr>
+    <button type="submit" class="btn btn-success float-right">
+        <span class='fas fa-check-circle'></span> {% trans 'Confirm' %}
+    </button>
 </form>
 
 {% else %}

InvenTree/templates/allauth_2fa/authenticate.html

@@ -8,7 +8,8 @@
   {% csrf_token %}
   {{ form|crispy }}
 
-  <button type="submit" class="btn btn-primary">
+  <hr>
+  <button type="submit" class="btn btn-primary float-right">
     <span class='fas fa-check-circle'></span> {% trans 'Authenticate' %}
   </button>
 </form>