More page formatting

Added server-side logic for register.html validation
Keep form firelds on register.html in the event of wrong input fields to save users from retyping info
More button rounding

powerdnsadmin/templates/template_edit.html

@@ -1,6 +1,12 @@
 {% extends "base.html" %}
+
 {% set active_page = "admin_domain_template" %}
-{% block title %}<title>Edit Template - {{ SITE_NAME }}</title>{% endblock %}
+
+{% block title %}
+  <title>
+    Edit Template - {{ SITE_NAME }}
+  </title>
+{% endblock %}
 
 {% block dashboard_stat %}
 <section class="content-header">
@@ -19,7 +25,7 @@
 {% block content %}
 <section class="content">
     <div class="row">
-        <div class="col-xs-12">
+        <div class="col-12">
             <div class="box">
                 <div class="box-header">
                     <h3 class="box-title">Manage Template Records for {{ template }}</h3>