Display booktitle for publications of type incollection (alshedivat#871)

_layouts/bib.html

@@ -89,7 +89,7 @@
           <!-- Journal/Book title and date -->
           {% if entry.type == "article" -%}
             {%- capture entrytype -%}<em>{{entry.journal}}</em>{%- endcapture -%}
-          {%- elsif entry.type == "inproceedings" -%}
+          {%- elsif ["inproceedings", "incollection"] contains entry.type -%}
             {%- capture entrytype -%}<em>In {{entry.booktitle}}</em> {%- endcapture -%}
           {%- endif -%}
           {%- if entry.month -%}