Bug 11879: Add a new field to patron record: main contact method

Bug 11879: Add a new field to patron record: main contact method

This patch adds the "Main Contact Method" field in the borrower
modification form.

This field is useful for reporting purposes, or to
know which contact method to use first when trying to contact a borrower.

Test plan:
0) Apply patch
1) updatedatabase.pl
2) In the staff client, edit a patron's contact info. There should be a new dropdown select to choose the main contact method
3) In the opac page, edit the personal details.There should be a new dropdown select to choose the main contact method.
4) Save the form. It should work.

Sponsored-by: CCSR ( http://www.ccsr.qc.ca )
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>