access: superadmin role fix

• FIX Sets the superadmin role ID properly when elaborating access authorizations. Previously it was masked behind an application context exception. (closes #3184)

• NOTE The default access role ID for the superadmin user is 1, but it can be configured via CFG_SUPERADMINROLE_ID.

• Removes a double wrong quote in acc_find_possible_actions().

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>