openFeatureForm: Update attributes on provided when used modal
Fix #11099
relation editor: use a public constructor, remove UI file

rename file according to class name
[custom widgets] add relation reference
QgsVectorLayer::uniqueValues() also returns uncommitted values
Followup 1bdef80: Fix crash when layer not in edit mode
allow reactivation of measurement after deactivation
Add icon size 48 and 64

To make life easier on touch devices
Fix #9527
[relation reference widget] minimize feature request, do not fill combobox if not shown
[relation reference widget] link can be remove in read-only, better display of buttons
[relation reference widget] improve size policy
[relation reference widget] remove unused properties (defined in field properties)
[relation reference widget] use a NULL QVariant for values, fix set/read null values
return the null value in the field type
do not use invalid QVariant
Add tooltip to view buttons on attribute table dialog
Slight optimization of widget wrappers
Lazy loading for relation editor
Lazy load in relation reference widget