Add user post wiping

If a user has spammed a lot of posts and made a mess of the board, this
will allow us to delete all posts by the offending user from the same
IP.

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/urls.py

@@ -42,6 +42,14 @@ urlpatterns = [
         ActionSuccessView.as_view(window_timeout=settings.ACTION_SUCCESS_CLOSE_TIMEOUT),
         name="post_delete_success",
     ),
+    path("post/wipe/<int:pk>/", PostWipeView.as_view(), name="post_wipe"),
+    path(
+        "post/wipe/success/",
+        ActionSuccessView.as_view(
+            window_timeout=settings.ACTION_SUCCESS_CLOSE_TIMEOUT, message="Posts wiped."
+        ),
+        name="post_wipe_success",
+    ),
     # Board views
     path("post/success/", PostSuccessView.as_view(), name="post_success"),
     path("<slug:url>/page/<int:page>/", BoardView.as_view(), name="board_detail"),