Tweak styling of interest tags on web and in epubs

src/epub/templates/in_this_issue.xhtml

@@ -14,7 +14,7 @@
           <p class="rubric">{% if let Some(kicker) = entry.understanding.kicker %}<span class="kicker">{{ kicker }}</span>{% if let Some(topics) = entry.understanding.topics %} &#160; {{ topics }}{% endif %}{% else %}{% if let Some(topics) = entry.understanding.topics %}{{ topics }}{% endif %}{% endif %}</p>
 {% endif %}
 {% if !entry.understanding.interests.is_empty() %}
-          <p class="matches"><span class="kicker">Matches</span>{% for interest in entry.understanding.interests %} <span class="interest">{{ interest.name }}</span>{% endfor %}</p>
+          <p class="matches">{% for interest in entry.understanding.interests %}{% if !loop.first %}<span class="sep">|</span>{% endif %}<span class="interest">{{ interest.name }}</span>{% endfor %}</p>
 {% endif %}
 {% if !entry.summary.is_empty() %}
           <p class="index-summary">{{ entry.summary }}</p>