ui: fix contest_filter (#234)

packages/ui-default/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.25.5",
+  "version": "4.25.6",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",

packages/ui-default/templates/contest_main.html

@@ -61,7 +61,7 @@
           <form method="get" name="filter-form">
             {{ _('Show') }}:
             <select class="inline compact select" name="rule">
-              <option value="0"{% if not rule %} selected{% endif %}>{{ _('All') }}</option>
+              <option value=""{% if not rule %} selected{% endif %}>{{ _('All') }}</option>
               {%- for k, v in model.contest.RULES -%}
                 {% if k != 'homework' %}
                   <option value="{{ k }}"{% if rule == k %} selected{% endif %}>{{ _('All {0} Contests').format(v.TEXT) }}</option>