Resume attachments form element should be made accessible

[Jono M]

The 'files' form element used to attach files when adding (but not editing) Resume education history, employment history, etc. is not currently accessible. Ideally this element should be removed entirely, but if that cannot easily be done then the following changes need to be made:

- The [+] button needs to be an image with descriptive alt text
- Each file input needs a hidden label

Affects latest master

[Jono M (jonom)]

Child of Bug #1259756

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/2990

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/2990
Committed: http://gitorious.org/mahara/mahara/commit/7c62675ac6120d1c6d83aa562dd6762a806c45ac
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 7c62675ac6120d1c6d83aa562dd6762a806c45ac
Author: Jono Mingard <email address hidden>
Date: Fri Feb 7 13:14:24 2014 +1300

Use labels in 'files' pieforms element (Bug #1277290)

Added hidden labels to each file input and changed the [+] button to use
the standard add icon with accessible alt text.

Change-Id: I526cc39e7a62814bbb34cd0203089cc726dc69e0
Signed-off-by: Jono Mingard <email address hidden>