Use flask url_for() for webdriver chrome icon instead of relative path

changedetectionio/templates/watch-overview.html

@@ -50,7 +50,7 @@
 
                 <td class="title-col inline">{{watch.title if watch.title is not none and watch.title|length > 0 else watch.url}}
                     <a class="external" target="_blank" rel="noopener" href="{{ watch.url }}"></a>
-                    {%if watch.fetch_backend == "html_webdriver" %}<img style="height: 1em; display:inline-block;" src="static/images/Google-Chrome-icon.png" />{% endif %}
+                    {%if watch.fetch_backend == "html_webdriver" %}<img style="height: 1em; display:inline-block;" src="{{url_for('static_content', group='images', filename='Google-Chrome-icon.png')}}" />{% endif %}
 
                     {% if watch.last_error is defined and watch.last_error != False %}
                     <div class="fetch-error">{{ watch.last_error }}</div>

requirements.txt

@@ -34,3 +34,5 @@ lxml
 
 # 3.141 was missing socksVersion, 3.150 was not in pypi, so we try 4.1.0
 selenium ~= 4.1.0
+pytest ~=6.2
+pytest-flask ~=1.2