Author: Stephen Parry
MDL-15187 tool_uploaduser: assign system roles from CSV
Added feature to assign/unassign system roles stored in the CSV fields
sysrole1, sysrole2... Roles to be unassigned are prefixed with minus.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2a34360ed99d1db49bbea7ce04f9bc3df160da6b
http://github.com/moodle/moodle/commit/2a34360ed99d1db49bbea7ce04f9bc3df160da6b
+ 2.9 en [assignedsysrole,tool_uploaduser]
+ 2.9 en [unassignedsysrole,tool_uploaduser]