[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, 1 insertions, 1 deletions

diff --git a/searx/templates/simple/search.html b/searx/templates/simple/search.html
index 360873c76..b26e27821 100644
--- a/searx/templates/simple/search.html
+++ b/searx/templates/simple/search.html
@@ -8,7 +8,7 @@
       <div class="search_box">
         <input id="q" name="q" type="text" placeholder="{{ _('Search for...') }}" tabindex="1" autocomplete="off" autocapitalize="none" spellcheck="false" autocorrect="off" dir="auto" value="{{ q or '' }}">
         <button id="clear_search" type="reset" aria-label="{{ _('clear') }}" class="hide_if_nojs"><span>{{ icon_big('close') }}</span><span class="show_if_nojs">{{ _('clear') }}</span></button>
-        <button id="send_search" type="submit" {%- if search_on_category_select -%}name="category_{{ selected_categories[0]|replace(' ', '_') }}"{%- endif -%} aria-label="{{ _('search') }}"><span class="hide_if_nojs">{{ icon_big('search-outline') }}</span><span class="show_if_nojs">{{ _('search') }}</span></button>
+        <button id="send_search" type="submit" {%- if search_on_category_select -%}name="category_{{ selected_categories[0]|replace(' ', '_') }}"{%- endif -%} aria-label="{{ _('search') }}"><span class="hide_if_nojs">{{ icon_big('search') }}</span><span class="show_if_nojs">{{ _('search') }}</span></button>
       </div>
     </div>
     {% set display_tooltip = true %}