[fix 3/3] actually only hide them for tabs

The categories.html template is used in three places:

1) for the tabs on the result page
2) for the default category selection in the preferences
3) for the advanced search category selection in the oscar theme

The search_on_category_select plugin only makes the checkboxes in 1)
behave like tabs. The previous commit however hides the checkboxes
in all three places when the plugin is loaded, which we don't want:
The categories in 2) and 3) always act like checkboxes, so the
checkboxes in these places should actually always be visible.

searx/static/plugins/css/search_on_category_select.css

@@ -1 +1 @@
-.category input { display: none; }
+.search-tabs .category input { display: none; }

searx/templates/oscar/categories.html

@@ -1,4 +1,4 @@
-<div id="categories">
+<div id="categories" class="{{categories_class}}">
     {% for category in ((categories_as_tabs | reverse) if rtl else categories_as_tabs) -%}
     <div class="category">
         <input type="checkbox" id="checkbox_{{ category|replace(' ', '_') }}" name="category_{{ category }}" {% if category in selected_categories %}checked="checked"{% endif %} />{{- '' -}}

searx/templates/oscar/search.html

@@ -19,7 +19,9 @@
   </div>
   <div class="row">
     <div class="col-sm-12">
+      {% with categories_class='search-tabs' %}
         {%- include 'oscar/categories.html' -%}
+      {% endwith %}
     </div>
   </div>
 </form><!-- / #search_form_full -->

searx/templates/simple/categories.html

@@ -11,7 +11,7 @@
     'files': 'file-tray-full-outline',
     'social media': 'people-outline',
 }  -%}
-<div id="categories" class="search_categories">{{- '' -}}
+<div id="categories" class="search_categories {{categories_class}}">{{- '' -}}
     <div id="categories_container">
         {%- if display_tooltip %}<div class="help">{{ _('Click on the magnifier to perform search') }}</div>{% endif -%}
         {%- for category in categories_as_tabs -%}

searx/templates/simple/search.html

@@ -10,7 +10,9 @@
       <button id="send_search" type="submit" tabindex="-1"><span class="hide_if_nojs">{{ icon_big('search-outline') }}</span><span class="show_if_nojs">{{ _('search') }}</span></button>
     </div>
     {% set display_tooltip = true %}
-    {% include 'simple/categories.html' %}
+    {% with categories_class='search-tabs' %}
+      {% include 'simple/categories.html' %}
+    {% endwith %}
   </div>
   <div class="search_filters">
     {% include 'simple/filters/languages.html' %}