Bug 20691: Add ability to turn feature on and off

Bug 20691: Add ability to turn feature on and off

This patch adds two preferences
1. AllowPatronToSetFinesVisibilityForGuarantor: Allow/Don't allow patrons to choose their own privacy settings for showing the patron's fines to the patron's guarantor
2. AllowStaffToSetFinesVisibilityForGuarantor: Allow/Don't allow staff to set the ability for a patron's fines to be viewed by linked patrons in the OPAC

Also adds a tinyint, non nullable, default to 0 column in borrower and deletedborrower named privacy_guarantor_fines.
1. privacy_guarantor_fines = 0 => don't allow guarantor to see guarantee's fines
2. privacy_guarantor_fines = 1 => allow guarantor to see guarantee's fines

To test:
1) git reset --hard master
2) apply patches (including dependencies)
3) perl installer/data/mysql/updatedatabase.pl
4) dbic
5) restart_all
6) in intranet search for AllowPatronToSetFinesVisibilityForGuarantor and AllowStaffToSetFinesVisibilityForGuarantor preferences
SUCCESS => both preferences should be present
7) search for a patron with guarantor
SUCCESS => in details tab, in "Library use" section you should see a row labeled "Show fines to guarantor"
8) edit
CHECK => in Guarantor information there is no "Show fines to guarantor" select
9) set AllowStaffToSetFinesVisibilityForGuarantor preference to "Allow"
10) return to patron with guarantor and edit
SUCCESS => in Guarantor information section there is a "Show fines to guarantor" select
11) change "Show fines to guarantor" select to "Yes" and save
SUCCESS => Value is saved
12) go to details tab
SUCCESS => in "Library use" section you see a row labeled "Show fines to guarantor" with value "Yes"
13) set OPACPrivacy preference to "Allow"
14) open 2 opacs, one with a patron that has a guarantor and another that hasn't and go to "your privacy" tab.
CHECK => in both opacs you should not see a "Allow your guarantor to view your current fines?" select
15) in intranet set AllowPatronToSetFinesVisibilityForGuarantor to "Allow"
16) refresh both opacs
SUCCESS => in Patron that has guarantor you see a "Allow your guarantor to view your current fines?" select
	=> in Patron without guarantor you don't see a "Allow your guarantor to view your current fines?" select
17) in Patron with guarantor change value of select and save
SUCCESS => Value is saved
18) in intranet set OPACPrivacy preference to "Don't allow" and AllowPatronToSetFinesVisibilityForGuarantor to "Don't allow"
19) got to "your personal details" in both opacs
CHECK => in both opacs you should not see no Privacy section with a "Allow your guarantor to view your current fines?" select
20) in intranet set AllowPatronToSetFinesVisibilityForGuarantor to "Allow"
21) refresh both opacs
SUCCESS => in Patron that has guarantor you see a "Allow your guarantor to view your current fines?" select in a Privacy section
        => in Patron without guarantor there is no Privacy section
22) in Patron with guarantor change value of select and update
SUCCESS => Value is saved
23) Sign off

Signed-off-by: Agustin Moyano <agustinmoyano@theke.io>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>