Fix image links not being opened in new tab (#790)

The majority of image links and links that are not handle by whoogle are not
opening in new tabs, this allow links that are not related to the application
to open in new tabs.

app/filter.py

@@ -462,8 +462,6 @@ def update_link(self, link: Tag) -> None:
                 self._av.add(netloc)
                 append_anon_view(link, self.config)
 
-            if self.config.new_tab:
-                link['target'] = '_blank'
         else:
             if href.startswith(MAPS_URL):
                 # Maps links don't work if a site filter is applied
@@ -482,6 +480,12 @@ def update_link(self, link: Tag) -> None:
             else:
                 link['href'] = href
 
+        if self.config.new_tab and (
+            link["href"].startswith("http")
+            or link["href"].startswith("imgres?")
+        ):
+            link["target"] = "_blank"
+
         # Replace link location if "alts" config is enabled
         if self.config.alts:
             # Search and replace all link descriptions