tested removing spaces

An attempt was made at removing unnecessary spaces from references in definitions and proofs.

Author: JoramSoch

_layouts/definition.html

@@ -24,10 +24,10 @@ <h1 class="post-title">Definition: {{ page.title }}</h1>
 	  {% for item in page.sources %}
 	    <li>
 	      {{item.authors}} ({{item.year}}): "{{item.title}}"<!--
-		  -->{% if item.in %}; in: <i>{{item.in}}</i> {% endif %}<!--
-		  -->{% if item.pages %}, {{item.pages}} {% endif %}<!--
-		  -->{% if item.url %}; URL: <a href="{{item.url}}">{{item.url}}</a> {% endif %}<!--
-		  -->{% if item.doi %}; DOI: <a href="https://doi.org/{{item.doi}}">{{item.doi}}</a> {% endif %}.
+		  -->{% if item.in %}; in: <i>{{item.in}}</i>{% endif %}<!--
+		  -->{% if item.pages %}, {{item.pages}}{% endif %}<!--
+		  -->{% if item.url %}; URL: <a href="{{item.url}}">{{item.url}}</a>{% endif %}<!--
+		  -->{% if item.doi %}; DOI: <a href="https://doi.org/{{item.doi}}">{{item.doi}}</a>{% endif %}.
 	    </li>
 	  {% endfor %} </ul><br>
 	{% else %}

_layouts/proof.html

@@ -23,11 +23,11 @@ <h1 class="post-title">Proof: {{ page.title }}</h1>
 	  <b>Sources:</b> <br><ul>
 	  {% for item in page.sources %}
 	    <li>
-	      {{item.authors}} ({{item.year}}): "{{item.title}}"
-		  {% if item.in %}; in: <i>{{item.in}}</i> {% endif %}
-		  {% if item.pages %}, {{item.pages}} {% endif %}
-		  {% if item.url %}; URL: <a href="{{item.url}}">{{item.url}}</a> {% endif %}
-		  {% if item.doi %}; DOI: <a href="https://doi.org/{{item.doi}}">{{item.doi}}</a> {% endif %}.
+	      {{item.authors}} ({{item.year}}): "{{item.title}}"<!--
+		  -->{% if item.in %}; in: <i>{{item.in}}</i>{% endif %}<!--
+		  -->{% if item.pages %}, {{item.pages}}{% endif %}<!--
+		  -->{% if item.url %}; URL: <a href="{{item.url}}">{{item.url}}</a>{% endif %}<!--
+		  -->{% if item.doi %}; DOI: <a href="https://doi.org/{{item.doi}}">{{item.doi}}</a>{% endif %}.
 	    </li>
 	  {% endfor %} </ul><br>
 	{% else %}