[sextante] R scripts can now be run from the script editor
[sextante] minor code cleaning
Radio button groups in composer label widget, consider label alignment in adjustSizeToText (important if replacing label text in server)
refs #7408
Fix error reporting when the filename expression is invalid
refs #7408
[Atlas] Add a checkbox on "filter with"
Update QgsColorButton so it shows a color chooser on click
Update core components to use the new QgsColorButton implementation
[FEATURE] Update QgsColorButton to offer live color chooser updates and show transparent checkerboard background

- Add option to Options for live color chooser support (QgsColorDialog)
- Add ability to define whether QgsColorButton accepts live updates (default: true)
- Move QgsColorButton to single subclass of QPushButton
- Show different button types relative to whether button has text
- Add transparent checkerboard background for chosen colors with alpha < 255
- Fix triple-modal window issue for Mac (with regards to using native color dialog)

- Composer item frame now supports transparency
- Composer item background transparency support moved to color dialog
- Composer composition grid now supports transparency
cosmetic chages in QGISAlgorithm provider, also remove unused icons and
add new ones to resources
review and cleanup Convex Hull tool, also move some common routines to
utils module and update other algs accordingly
review Clip tool
review Difference tool
housekeeping: remove obsolete code, completely switch to new vector API
Fix missing conversion from QgsColorButtonV2 to QgsColorButton
Fix for #7398, allow alpha value change in line pattern fill color picker

- Add alpha picker and render support for: line pattern fill, line decoration symbol, font marker symbol
[FEATURE] Add composition blend modes for layers (#5248)
Add support for loading and saving blend modes to project files
New blend modes combo box widget
Add blend modes widget to vector layer properties dialog
Add blend modes widget to raster layer properties dialog