Fix incorrect collaborator and owner email links

Also, fix duplicate emails where a user as a collaborator would be sent a
confirmation for their own respective email.
Merge pull request #1235 from greezybacon/issue/collaborator-links

Fix incorrect collaborator and owner email links

Reviewed-By: Peter Rotich <peter@osticket.com>
forms: Fix html rendering of checkbox description
api: Handle ArrayObject like an array for request validation
forms: Always attempt to look up selection value by name
Merge pull request #1237 from greezybacon/issue/1079

api: Handle ArrayObject like an array for request validation

Reviewed-By: Peter Rotich <peter@osticket.com>
Merge pull request #1238 from greezybacon/issue/737

forms: Always attempt to look up selection value by name

Reviewed-By: Peter Rotich <peter@osticket.com>
Merge pull request #1160 from greezybacon/issue/checkbox-desc-html

forms: Fix html rendering of checkbox description

Reviewed-By: Peter Rotich <peter@osticket.com>
forms: Fix crash adding user with selection field
Merge remote branch 'upstream/develop' into develop-next

Conflicts:
	include/class.dynamic_forms.php
oops: Enable drag+drop and copy+paste in Redactor