speaker: do not display company if None

Author: Kátia Nakamura

pyconbalkan/speaker/templates/speaker.html

@@ -16,7 +16,7 @@ <h1>
                 {% if speaker.country %}<i class="flag em em-flag-{{ speaker.country.code|lower }}"></i>{% endif %}
             </h1>
 
-            <h2><i class="fas fa-laptop-code"></i> {{ speaker.job }} - {{ speaker.company }}</h2>
+            <h2><i class="fas fa-laptop-code"></i> {{ speaker.job }} {% if speaker.company %}- {{ speaker.company }}{% endif %}</h2>
             <p class="speaker__description title--white">
                 {{ speaker.description|safe }}
             </p>

pyconbalkan/speaker/templates/speakers.html

@@ -23,7 +23,7 @@ <h1 class="centered">Speakers</h1>
                         {% if speaker.country %}
                             <i class="flag em em-flag-{{ speaker.country.code|lower }}"></i>
                         {% endif %}
-                        , <span class="title-white"> {{ speaker.job }} - {{ speaker.company }}</span>
+                        , <span class="title-white"> {{ speaker.job }} {% if speaker.company %}- {{ speaker.company }}{% endif %}</span>
                     </h1></a>
                     {% for presentation in speaker.presentation.all %}
                         <h2>{{ presentation.title }}</h2>