Added contestant order in WSContest contest page

Added contestant rank on the contest page of WSContest. It will be beneficial to the contestant as well as admins to be able to tell, for example: who are the top 10 contestant, how many total contestants are there, etc.

Bug: T331507

i18n/en.json

@@ -52,6 +52,7 @@
   "contest": "Contest: $1",
   "details": "Details",
   "unable-to-save": "Unable to save: $1",
+  "rank": "Rank",
   "user": "User",
   "points": "Points",
   "contributions": "Contributions",

i18n/qqq.json

@@ -49,6 +49,7 @@
 	"contest": "Contest header. $1 is the contest name.",
 	"details": "Link to view score details of a single user.",
 	"unable-to-save": "Error message displayed when unable to save a contest. $1 is the reason.",
+	"rank": "Table header of the user details' table.",
 	"user": "Table header of the user details' table.",
 	"points": "Table header of the user details' table.",
 	"contributions": "Table header of the user details' table.\n\n{{Identical|Contribution}}",

templates/contests_view.html.twig

@@ -55,6 +55,7 @@
             <caption style="caption-side: top">{{ msg('scores-legend', [score_calculation_interval~'']) }}</caption>
             <thead>
                 <tr>
+                    <th>{{ msg('rank') }}</th>
                     <th>{{ msg('user') }}</th>
                     <th>{{ msg('points') }}</th>
                     <th>{{ msg('contributions') }}</th>
@@ -63,8 +64,9 @@
                 </tr>
             </thead>
             <tbody>
-            {% for score in scores %}
+            {% for index, score in scores %}
                 <tr>
+                    <td>{{ index + 1 }}</td>
                     <td><a href="https://meta.wikimedia.org/wiki/User:{{ score.username }}">{{ score.username }}</a></td>
                     <td>{{ score.points }}</td>
                     <td>{{ score.contributions }}</td>