What is the problem?

Tables currently can't be used in the "Describe your wish" section because the pipes are reserved characters.

Steps to reproduce problem

1. Go to create or edit a wish
2. The following table syntax is an example, but you can also use Insert > Table from the editing toolbar:

{| class="wikitable"
|+ Caption
|-
! Heading 1
|-
| Foo
|}

3. Save the wish

Expected behavior:

The table appears as it should after saving -- i.e. if I used VisualEditor, it should look the same as it did when I added it in VE.

Observed behavior:

Template call is broken and the table doesn't appear, and other visual errors may also occur.