[web-client] simple theme: refactor jinja_svg_catalog and cleanup icon names

This patch implements the template generation of the template:

  searx/templates/simple/icons.html

by the way the icon set (the icon names) has been normalized:

  film-outline   --> film
  magnet-outline --> magnet
  ..
  warning        --> alert

Some missing (categorie) icons had been added.

Some of the ionicons are not suitable for a dark theme, we fixed the svg
manually in src/svg/ionicons:

- https://github.com/searxng/searxng/pull/4284#issuecomment-2680550342

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/searx/templates/simple/base.html b/searx/templates/simple/base.html
index 93249fbf8..2eebde676 100644
--- a/searx/templates/simple/base.html
+++ b/searx/templates/simple/base.html
@@ -46,15 +46,15 @@
     <nav id="links_on_top">
       {%- from 'simple/icons.html' import icon_big -%}
       {%- block linkto_about -%}
-        <a href="{{ url_for('info', pagename='about') }}" class="link_on_top_about">{{ icon_big('information-circle-outline') }}<span>{{ _('About') }}</span></a>
+        <a href="{{ url_for('info', pagename='about') }}" class="link_on_top_about">{{ icon_big('information-circle') }}<span>{{ _('About') }}</span></a>
       {%- endblock -%}
       {%- block linkto_donate -%}
         {%- if donation_url -%}
-        <a href="{{ donation_url }}" class="link_on_top_donate">{{ icon_big('heart-outline') }}<span>{{ _('Donate') }}</span></a>
+        <a href="{{ donation_url }}" class="link_on_top_donate">{{ icon_big('heart') }}<span>{{ _('Donate') }}</span></a>
         {%- endif -%}
       {%- endblock -%}
       {%- block linkto_preferences -%}
-        <a href="{{ url_for('preferences') }}" class="link_on_top_preferences">{{ icon_big('menu-outline') }}<span>{{ _('Preferences') }}</span></a>
+        <a href="{{ url_for('preferences') }}" class="link_on_top_preferences">{{ icon_big('settings') }}<span>{{ _('Preferences') }}</span></a>
       {%- endblock -%}
     </nav>
     {% block header %}