The use of img_src AND thumbnail in the default results makes no sense (only a
thumbnail is needed). In the current state this is rather confusing, because
img_src is displayed like a thumbnail (small) and thumbnail is displayed like an
image (large).
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
To test this patch I used .. and checked the diff of the `messages.pot` file::
$ ./manage pyenv.cmd pybabel extract -F babel.cfg \
-o ./searx/translations/messages.pot searx/
$ git diff ./searx/translations/messages.pot
----
hint from @dalf: f-string are not supported [1] but there is no error [2].
[1] python-babel/babel#594
[2] python-babel/babel#715
Closes: https://github.com/searxng/searxng/issues/3412
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
