Use const pointer for QgsExpression:replaceExpressionText()
Add uuid function for expression engine
Merge pull request #929 from tomass/master

Lithuanian translation update
Add option to insert a NULL value in a value map when loaded from layer
Fix #8776

Set the canvas color in 'qgsprojectproperties::apply()' before refresh
Add join field to provider request also when requesting a subset of attributes
Fixes #8757
[spatialite] Fix crash with a subset of attributes request for joined field
[processing] fixed wrong signal connection
Fix warnings
Lithuanian translatio update