Add pieform element for multiple text fields

[Richard Mansfield]

Sometimes we may want a user to enter multiple text fields, without specifying how many. This will initially be useful for collecting multiple mobile upload tokens for users with more than one device, but should be general purpose.

See the discussion at https://mahara.org/interaction/forum/topic.php?id=3706

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/1206
Committed: http://gitorious.org/mahara/mahara/commit/8a87563472e44194e765a72f3f91830ba92ec050
Submitter: Hugh Davenport (<email address hidden>)
Branch: master

commit 8a87563472e44194e765a72f3f91830ba92ec050
Author: Richard Mansfield <email address hidden>
Date: Thu May 10 15:40:26 2012 +1200

    Pieform element for an array of text fields (bug #997834)

    Sometimes we may want a user to enter multiple text fields, without
    specifying how many. This will be useful for collecting multiple
    mobile upload tokens for users with more than one device.

    Change-Id: I1862a223f1ea601a2e28009527c170e1aa3115c8
    Signed-off-by: Richard Mansfield <email address hidden>

[Hugh Davenport (hugh-davenport)]

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