Don't separate arrows from text in prev/next links

Fixes: #279

Author: encukou

naucse/templates/_navigation_macros.html

@@ -6,18 +6,18 @@
 
 {% macro prev(url, title) %}
     <div class="col text-left">
-        <a href="{{ url }}">← <span class="d-none d-sm-block">{{ title }}</span></a>
+        <a href="{{ url }}">← <span class="d-none d-sm-inline">{{ title }}</span></a>
     </div>
 {% endmacro %}
 
 {% macro up(url, title) %}
     <div class="col text-left">
-        <a href="{{ url }}">↑ <span class="d-none d-sm-block">{{ title }}</span></a>
+        <a href="{{ url }}">↑ <span class="d-none d-sm-inline">{{ title }}</span></a>
     </div>
 {% endmacro %}
 
 {% macro next(url, title) %}
     <div class="col text-right">
-        <a href="{{ url }}"><span class="d-none d-sm-block">{{ title }}</span> →</a>
+        <a href="{{ url }}"><span class="d-none d-sm-inline">{{ title }}</span> →</a>
     </div>
 {% endmacro %}