Bug 15492: Add SCI module

Bug 15492: Add SCI module

This patch adds the SCI module, and adapts C4::Auth to know about it.

The current behaviour is:
- Requires admin user initialization/login
- Uses the logged users' library
- A form allows to scan multiple barcodes
- A button sends the barcode list to the controller
  to batch perform the checkins
- Successful and failed checkins are sent to the template
- Results are displayed
- Logout link

To test:
- Apply this patches
- Make sure you upgrade:
  $ kshell
 k$ perl installer/data/mysql/updatedatabase.pl
- Have 'SelfCheckInModule' disabled
- Go to http://kohadev.myDNSname.org:8080/cgi-bin/koha/sci/sci-main.pl [1]
=> SUCCESS: You are rejected because the feature is disabled
- Enable 'SelfCheckInModule'
- Go to the previous URL
=> SUCCESS: You are required to login
- Login with a user WITHOUT self_checkout permissions
=> SUCCESS: You are not allowed to log into the Self check-in module.
- Login with a user WITH self_checkour permissions
=> SUCCESS: You gain access, and are presented the UI
- Go through the several options
=> SUCCESS: All works as it should
- Click the 'Help' link
=> SUCCESS: A help text is displayed on a modal
- Sign off :-D

- Bonus points:
  $ kshell
 k$ qa -c 2 -v 2
=> SUCCESS: All tests green

[1] Adjust to your dev's OPAC setup

Signed-off-by: David Bourgault <david.bourgault@inlibro.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>