NXP-16240: cleanup
NXP-16236: make DefaultPermissionProvider thread-safe
NXP-16052: clean up exceptions (this sometimes threw NPE)
NXP-16252: Null document's properties are reimported with empty value (not null)
NXP-16257: fix rendering of user suggestion widgets inside lists in pdf/view mode (remove caching on variable depending on bound field as it can be exposed at render time only)