[fix] simple-theme templates: polish HTML <img> elements

- <img> [1] element does not have an end tag, no need for a leading `/>`
- add global attribute title[2] to result_templates/images.html (result-images-source)
- in jinja macro 'macro result_header' remove duplicate of class="image"
- in jinja macro 'macro result_header' remove alt attribute (fix [3])::

    alt="{{ result.title|striptags }}"

  the result.title is already shown in::

    <h3>{{ result_link(result.url, result.title|safe) }}</h3>

[1] https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img
[2] https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes#attr-title
[3] https://github.com/searxng/searxng/issues/523

Closes: https://github.com/searxng/searxng/issues/523
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/searx/templates/simple/macros.html b/searx/templates/simple/macros.html
index 7a3a4ff9f..3920da2b3 100644
--- a/searx/templates/simple/macros.html
+++ b/searx/templates/simple/macros.html
@@ -1,6 +1,6 @@
 <!-- Draw favicon -->
 {% macro draw_favicon(favicon) -%}
-    <img width="14" height="14" class="favicon" src="{{ url_for('static', filename='themes/simple/img/icons/' + favicon + '.png') }}" alt="{{ favicon }}" />
+    <img width="14" height="14" class="favicon" src="{{ url_for('static', filename='themes/simple/img/icons/' + favicon + '.png') }}" alt="{{ favicon }}">
 {%- endmacro %}
 
 {% macro result_open_link(url, classes='') -%}
@@ -23,8 +23,8 @@
   <span class="url_o{{loop.index}}"><span class="url_i{{loop.index}}">{{- part -}}</span></span>
   {%- endfor %}
   {{- result_close_link() -}}
-  {%- if result.img_src %}{{ result_open_link(result.url) }}<img class="image" src="{{ image_proxify(result.img_src) }}" alt="{{ result.title|striptags }}" title="{{ result.title|striptags }}" class="image" />{{ result_close_link() }}{% endif -%}
-  {%- if result.thumbnail %}{{ result_open_link(result.url) }}<img class="thumbnail" src="{{ image_proxify(result.thumbnail) }}" title="{{ result.title|striptags }}" alt="{{ result.title|striptags }}"/>{{ result_close_link() }}{% endif -%}
+  {%- if result.img_src %}{{ result_open_link(result.url) }}<img class="image" src="{{ image_proxify(result.img_src) }}" title="{{ result.title|striptags }}">{{ result_close_link() }}{% endif -%}
+  {%- if result.thumbnail %}{{ result_open_link(result.url) }}<img class="thumbnail" src="{{ image_proxify(result.thumbnail) }}" title="{{ result.title|striptags }}">{{ result_close_link() }}{% endif -%}
   <h3>{{ result_link(result.url, result.title|safe) }}</h3>
 {%- endmacro -%}