improve thematic tournament integration

app/views/tournament/form.scala.html

@@ -32,7 +32,19 @@ <h1>@trans.createANewTournament()</h1>
         </tr>
         <tr class="position">
           <th><label for="@form("position").id">@trans.startPosition()</label></th>
-          <td>@base.select(form("position"), positionChoices)</td>
+          <td>
+            @defining(form("position")) { field =>
+            <select name="@field.name">
+              @chess.StartingPosition.categories.map { categ =>
+              <optgroup label="@categ.name">
+                @categ.positions.map { v =>
+                <option value="@v.eco" @(if(field.value == Some(v.eco)) "selected" else "")>@v.fullName</option>
+                }
+              </optgroup>
+              }
+            </select>
+            }
+          </td>
         </tr>
         <tr>
           <th><label for="@form("mode").id">@trans.mode()</label></th>

app/views/tournament/side.scala.html

@@ -19,6 +19,10 @@
   }.getOrElse {
   @momentFormat(tour.createdAt)
   }
+  @if(tour.position != chess.StartingPosition.initial) {
+  <br /><br />
+  <strong>@tour.position.eco</strong> @tour.position.name
+  }
   @tour.winner.filter(_ => tour.isFinished).map { winner =>
   <br /><br />
   @trans.winner(): @userInfosLink(winner.id, none)

modules/tournament/src/main/Tournament.scala

@@ -298,7 +298,9 @@ object Tournament {
     val tour = Created(
       id = Random nextStringUppercase 8,
       data = Data(
-        name = RandomName(),
+        name =
+          if (position == StartingPosition.initial) RandomName()
+          else position.shortName,
         system = system,
         clock = clock,
         createdBy = createdBy.id,