Debug UI policies

Enabling the glide.ui.ui_policy_debug property lets you monitor the processing of UI actions.

Here are some sample log events from an incident policy that sets fields to read-only if the incident_state is closed.
GlideFieldPolicy: Evaluating condition
GlideFieldPolicy:     incident_state (7) = 7 -> true
GlideFieldPolicy: --->>> TRUE
GlideFieldPolicy:    Setting opened_at disabled to true
GlideFieldPolicy:    Setting opened_by disabled to true
GlideFieldPolicy:    Setting closed_at disabled to true
GlideFieldPolicy:    Setting closed_by disabled to true
GlideFieldPolicy:    Setting company disabled to true