Improve blog post display

* Add a post date to each post
* Do not show the post date for tours
* Only show posts tagged "current-event" on the home page (hiding 37c3 entries)
* Use a custom template for sorting the summary list by title (instead of the default by date)

layouts/_default/summary.html

@@ -0,0 +1,12 @@
+<article class="list-view{{ with .Section }} list-view--{{ . | urlize }}{{ end }}">
+<header>
+{{- $postDate := "" }}
+{{- if .Param "showPostDate" | default false }}
+{{- $postDate = .Params.date.Format .Site.Params.dateFormat }}
+{{- end }}
+<h2 class="title mt--s{{ if $.Param "submitted" | default false }} mb--xxs{{ end }}"><a href="{{ .RelPermalink }}">{{ .Title }}</a> <span class="title-post-date">{{ $postDate }}</span></h2>
+{{ if $.Param "submitted" | default false }}{{ partial "submitted.html" . -}}{{ end }}
+</header>
+
+{{ .Summary }}
+</article>

layouts/index.html

@@ -0,0 +1,15 @@
+{{ define "title" }}{{ site.Title }}{{ end }}
+
+{{ define "main" -}}
+<main class="main layout__main">
+{{ .Content }}
+
+{{ $pages := .Site.RegularPages.RelatedTo (keyVals "tags" "current-event") -}}
+{{ $paginator := .Paginate $pages -}}
+{{ range $paginator.Pages -}}
+{{ .Render "summary" }}
+{{ end -}}
+
+{{ partial "pagination.html" . }}
+</main>
+{{ end -}}