templates/index: Directly referencing config.REFRESH_RATE

Fixes https://github.com/voxpupuli/puppetboard/issues/213

Also changing the 'if' condition from '!=' to '>' since this application
can only work with unsigned integers

puppetboard/app.py

@@ -140,7 +140,6 @@ def index(env):
     # TODO: Would be great if we could parallelize this somehow, doing these
     # requests in sequence is rather pointless.
     prefix = 'puppetlabs.puppetdb.query.population'
-    refreshrate = app.config['REFRESH_RATE']
     num_nodes = get_or_abort(
         puppetdb.metric,
         "{0}{1}".format(prefix, ':type=default,name=num-nodes'))
@@ -198,7 +197,6 @@ def index(env):
         nodes=nodes_overview,
         stats=stats,
         envs=envs,
-        refreshrate=refreshrate,
         current_env=env
         )
 

puppetboard/templates/index.html

@@ -1,8 +1,8 @@
 {% extends 'layout.html' %}
 {% import '_macros.html' as macros %}
 {% block content %}
-{% if refreshrate != 0 %}
-<meta http-equiv="refresh" content="{{refreshrate}}">
+{% if config.REFRESH_RATE > 0 %}
+<meta http-equiv="refresh" content="{{config.REFRESH_RATE}}">
 {% endif %}
 <div class="ui vertical grid">
   <div class="four column row">