Fixes edits to a joined field value aren't immediately shown in attribute tables,
and instead appear as though they were discarded (until the attribute table is
reloaded)
BUT only if they have a non-hidden editor widget.
Rationale: it's very handy to be able to bulk-update these in certain
circumstances (e.g. select a bunch of features, set their label alignment
to "right"). But on the other hand, using the label tools creates a LOT
of auxiliary fields which clutter this dialog (which is why they were
hidden in the first place).
SO instead, default to hiding them all, but if a user HAS specifically
changed the field to show it, then allow them to edit it through
field calculator....
* Enabled using default path for external resources.
Value (filepath) can be relative to either project path or default root according field setup/config
* [QgsQuick] Added signal of event when a captured photo is confirmed. That enables custom handling of the action by externalResourceHandler.
Renamed Ok Button of PhotoPanel.
* [QgsQuick] Cleaning source of preview image after closing it
It was causing unpleasant effect when last taken photo has been shown for a short while before previewing another.
* [QgsQuick]
Evaluate and use defaultRootPath in a config of the external resource widget.
Added a function to evaluate expressions for QgsQuick
* [QgsQuick] Use Loader to load photo panel only when its going to be used.
Also prevents for asking camera permissions on form open, when photo panel was initialized as well.
* [QgsQuick] Better wrapping of a long filenames text in the external source widget if an image is not available.
* [QgsQuick] Use canonical path in function
Symlinks are used a lot on Android, therefore its better to use canonical paths.
* [QgsQuick] formatted code.
* [QgsQuick] External source widget - changes requested in review
Fixed test and added one test case for getting relative path.
* [QgsQuick] External widget update
Added function that returns absolute path of image according widget's config - takes into account relative/absolute setting for value and default path.
Added docs about how a path can be configured and used.
* [QgsQuick] External widget update
* removed lefover property
* corrected getAbsolutePath function
* [QgsQuick] Corrected function and fixed test
Do not use canonical path for non-existing file while getting relative path.
* Fix WMS GetMap 8bit mode with transparency
* Correct indentation
* Remove french text in qgs test project
* Correct render checker for 8bit image
* Remove empty line
