Add support for showing latest dev/stable versions

app/views/pkg/show.mustache

Index: app/views/pkg/show.mustache
diff --git a/app/views/pkg/show.mustache b/app/views/pkg/show.mustache
index f441720f756c59068eeb544b888d3dfbcbb41f88..d1cec983aba428b8ef8bcb39cedbee9f507033d8 100644
--- a/app/views/pkg/show.mustache
+++ b/app/views/pkg/show.mustache
@@ -4,7 +4,18 @@
 
 <h1>
   {{package.name}}
-  <span class="version">{{package.latest_version.version}}</span>
+  <span class="version">{{package.selected_version.version}}</span>
+  <span class="version" style="font-weight: normal">
+    {{#package.latest.should_show}}
+    (latest:

[Søren Gjesse, 2016/06/17 07:03:37]

I saw that you already deployed this, and maybe the "(latest: v1 / v2)" UI could
be more clear, but that can always be changed in the template if someone can
come up with something better.

Do you have some feedback from the requester?

[kustermann, 2016/06/28 09:53:31]

I couldn't get any feedback without deploying and so far didn't get any. But we
can always tweak it if necessary.

The good thing is the UI only changes for packages where there is a newer
pre-release version than the latest stable version (99% of packages don't have
that).

+      <a href="/packages/{{package.name}}/versions/{{package.latest.stable}}" >{{package.latest.stable}}</a>
+    {{#package.latest.should_show_dev}}
+     /
+      <a href="/packages/{{package.name}}/versions/{{package.latest.dev}}" >{{package.latest.dev}}</a>
+    {{/package.latest.should_show_dev}}
+    )
+    {{/package.latest.should_show}}
+  </span>
 </h1>
 <div class="row-fluid">
   <div class="span8">