create new events page

[mattstratton]

See #405 for design

[mattstratton]

Make sure that this page is aliased from /presentations or whatever

[bridgetkromhout]

Not sure how to alias the page. This does not work:

$ git diff
diff --git a/themes/devopsdays-responsive/layouts/section/events.html b/themes/devopsdays-responsive/layouts/section/events.html
index 6c7ad45..5ac6c05 100644
--- a/themes/devopsdays-responsive/layouts/section/events.html
+++ b/themes/devopsdays-responsive/layouts/section/events.html
@@ -1,5 +1,7 @@
 {{ partial "header.html" . }}

+aliases = ["/presentations"]
+
 <div class="row">
   <div class="col-md-12">
     <h1>Devopsdays Events</h1>
Bridgets-MacBook-Air:devopsdays-web bridget$ 

[bridgetkromhout]

Fixed with advice from @mattstratton in #519.