[fix] proper escaping of the search query in templates

searx/templates/courgette/results.html

 {% extends "courgette/base.html" %}
-{% block title %}{{ q }} - {% endblock %}
-{% block meta %}<link rel="alternate" type="application/rss+xml" title="Searx search: {{ q }}" href="{{ url_for('index') }}?q={{ q|urlencode }}&amp;format=rss&amp;{% for category in selected_categories %}category_{{ category }}=1&amp;{% endfor %}pageno={{ pageno }}">{% endblock %}
+{% block title %}{{ q|e }} - {% endblock %}
+{% block meta %}<link rel="alternate" type="application/rss+xml" title="Searx search: {{ q|e }}" href="{{ url_for('index') }}?q={{ q|urlencode }}&amp;format=rss&amp;{% for category in selected_categories %}category_{{ category }}=1&amp;{% endfor %}pageno={{ pageno }}">{% endblock %}
 {% block content %}
 <div class="right"><a href="{{ url_for('preferences') }}" id="preferences"><span>{{ _('preferences') }}</span></a></div>
 <div class="small search center">
             {% for output_type in ('csv', 'json', 'rss') %}
             <form method="{{ method or 'POST' }}" action="{{ url_for('index') }}">
                 <div class="left">
-                    <input type="hidden" name="q" value="{{ q }}" />
+                    <input type="hidden" name="q" value="{{ q|e }}" />
                     <input type="hidden" name="format" value="{{ output_type }}" />
                     {% for category in selected_categories %}
                     <input type="hidden" name="category_{{ category }}" value="1"/>
         {% if pageno > 1 %}
             <form method="{{ method or 'POST' }}" action="{{ url_for('index') }}">
                 <div class="left">
-                    <input type="hidden" name="q" value="{{ q }}" />
+                    <input type="hidden" name="q" value="{{ q|e }}" />
                     {% for category in selected_categories %}
                     <input type="hidden" name="category_{{ category }}" value="1"/>
                     {% endfor %}
                 {% for category in selected_categories %}
                 <input type="hidden" name="category_{{ category }}" value="1"/>
                 {% endfor %}
-                <input type="hidden" name="q" value="{{ q }}" />
+                <input type="hidden" name="q" value="{{ q|e }}" />
                 <input type="hidden" name="pageno" value="{{ pageno+1 }}" />
                 <input type="submit" value="{{ _('next page') }} >>" />
             </div>

searx/templates/legacy/results.html

 {% extends "legacy/base.html" %}
-{% block title %}{{ q }} - {% endblock %}
-{% block meta %}<link rel="alternate" type="application/rss+xml" title="Searx search: {{ q }}" href="{{ url_for('index') }}?q={{ q|urlencode }}&amp;format=rss&amp;{% for category in selected_categories %}category_{{ category }}=1&amp;{% endfor %}pageno={{ pageno }}">{% endblock %}
+{% block title %}{{ q|e }} - {% endblock %}
+{% block meta %}<link rel="alternate" type="application/rss+xml" title="Searx search: {{ q|e }}" href="{{ url_for('index') }}?q={{ q|urlencode }}&amp;format=rss&amp;{% for category in selected_categories %}category_{{ category }}=1&amp;{% endfor %}pageno={{ pageno }}">{% endblock %}
 {% block content %}
 <div class="preferences_container right"><a href="{{ url_for('preferences') }}" id="preferences"><span>preferences</span></a></div>
 <div class="small search center">
         {% for output_type in ('csv', 'json', 'rss') %}
         <form method="{{ method or 'POST' }}" action="{{ url_for('index') }}">
             <div class="left">
-            <input type="hidden" name="q" value="{{ q }}" />
+            <input type="hidden" name="q" value="{{ q|e }}" />
             <input type="hidden" name="format" value="{{ output_type }}" />
             {% for category in selected_categories %}
             <input type="hidden" name="category_{{ category }}" value="1"/>
         {% if pageno > 1 %}
             <form method="{{ method or 'POST' }}" action="{{ url_for('index') }}">
                 <div class="{% if rtl %}right{% else %}left{% endif %}">
-                <input type="hidden" name="q" value="{{ q }}" />
+                <input type="hidden" name="q" value="{{ q|e }}" />
                 {% for category in selected_categories %}
                 <input type="hidden" name="category_{{ category }}" value="1"/>
                 {% endfor %}
                 {% for category in selected_categories %}
                 <input type="hidden" name="category_{{ category }}" value="1"/>
                 {% endfor %}
-                <input type="hidden" name="q" value="{{ q }}" />
+                <input type="hidden" name="q" value="{{ q|e }}" />
                 <input type="hidden" name="pageno" value="{{ pageno+1 }}" />
                 <input type="submit" value="{{ _('next page') }} >>" />
             </div>

searx/templates/oscar/results.html

 {% extends "oscar/base.html" %}
-{% block title %}{{ q }} - {% endblock %}
-{% block meta %}<link rel="alternate" type="application/rss+xml" title="Searx search: {{ q }}" href="{{ url_for('index') }}?q={{ q|urlencode }}&amp;format=rss&amp;{% for category in selected_categories %}category_{{ category }}=1&amp;{% endfor %}pageno={{ pageno }}&amp;time_range={{ time_range }}">{% endblock %}
+{% block title %}{{ q|e }} - {% endblock %}
+{% block meta %}<link rel="alternate" type="application/rss+xml" title="Searx search: {{ q|e }}" href="{{ url_for('index') }}?q={{ q|urlencode }}&amp;format=rss&amp;{% for category in selected_categories %}category_{{ category }}=1&amp;{% endfor %}pageno={{ pageno }}&amp;time_range={{ time_range }}">{% endblock %}
 {% block content %}
     <div class="row">
         <div class="col-sm-8" id="main_results">
             <div id="pagination">
                 <div class="pull-left">
                     <form method="{{ method or 'POST' }}" action="{{ url_for('index') }}" class="pull-left">
-                        <input type="hidden" name="q" value="{{ q }}" />
+                        <input type="hidden" name="q" value="{{ q|e }}" />
                         {% for category in selected_categories %}<input type="hidden" name="category_{{ category }}" value="1"/>{% endfor %}
-                        <input type="hidden" name="q" value="{{ q }}" />
+                        <input type="hidden" name="q" value="{{ q|e }}" />
                         <input type="hidden" name="pageno" value="{{ pageno+1 }}" />
                         <input type="hidden" name="time_range" value="{{ time_range }}" />
                         <button type="submit" class="btn btn-default"><span class="glyphicon glyphicon-backward"></span> {{ _('next page') }}</button>
             <div id="pagination">
                 <div class="pull-left">
                     <form method="{{ method or 'POST' }}" action="{{ url_for('index') }}" class="pull-left">
-                        <input type="hidden" name="q" value="{{ q }}" />
+                        <input type="hidden" name="q" value="{{ q|e }}" />
                         {% for category in selected_categories %}<input type="hidden" name="category_{{ category }}" value="1"/>{% endfor %}
                         <input type="hidden" name="pageno" value="{{ pageno-1 }}" />
                         <input type="hidden" name="time_range" value="{{ time_range }}" />
                 <div class="pull-right">
                     <form method="{{ method or 'POST' }}" action="{{ url_for('index') }}"  class="pull-left">
                         {% for category in selected_categories %}<input type="hidden" name="category_{{ category }}" value="1"/>{% endfor %}
-                        <input type="hidden" name="q" value="{{ q }}" />
+                        <input type="hidden" name="q" value="{{ q|e }}" />
                         <input type="hidden" name="pageno" value="{{ pageno+1 }}" />
                         <input type="hidden" name="time_range" value="{{ time_range }}" />
                         <button type="submit" class="btn btn-default"><span class="glyphicon glyphicon-forward"></span> {{ _('next page') }}</button>
                     <div class="clearfix"></div>
                     {% for output_type in ('csv', 'json', 'rss') %}
                     <form method="{{ method or 'POST' }}" action="{{ url_for('index') }}" class="form-inline pull-{% if rtl %}right{% else %}left{% endif %} result_download">
-                        <input type="hidden" name="q" value="{{ q }}">
+                        <input type="hidden" name="q" value="{{ q|e }}">
                         <input type="hidden" name="format" value="{{ output_type }}">
                         {% for category in selected_categories %}<input type="hidden" name="category_{{ category }}" value="1">{% endfor %}
                         <input type="hidden" name="pageno" value="{{ pageno }}">

searx/templates/pix-art/results.html

     {% endfor %}
 {% else %}
 {% extends "pix-art/base.html" %}
-{% block title %}{{ q }} - {% endblock %}
+{% block title %}{{ q|e }} - {% endblock %}
 {% block meta %}{% endblock %}
 {% block content %}
 <div id="logo"><a href="./"><img src="{{ url_for('static', filename='img/searx-pixel-small.png') }}" alt="searx Logo"/></a></div>
     </span>
     <div id="pagination">
         <br />
-        <input type="button" onclick="load_more('{{ q }}', {{ pageno+1 }})" id="load_more" value="{{ _('Load more...') }}" />
+        <input type="button" onclick="load_more('{{ q|e }}', {{ pageno+1 }})" id="load_more" value="{{ _('Load more...') }}" />
     </div>
 </div>
 {% endblock %}
-{% endif %}
+{% endif %}