Fix typo in renderchecker output
Update labeling canvas and server unit tests and output new control images
Add labeling composer unit tests and control images

- Initial support for image output at 72 dpi
- Comparison against canvas output has slight shift (needs fixed)
osgeo4w: always do a clean build
Add svgSymbolsPath to Python unit test utilities (for defining paths without app instance)
Fix #9057, offset value misplaced when exporting composer to image

- Add unit test and control images
Add label svg background unit tests and control images
Update labeling unit tests control image and PAL_SUITE test suite generation
fix PyQgsBlendModes test (followup da1ebc269)
Fix #9393, impossible to select 'regular' font style for labels

- While ostensibly fixes the issue, there is still a flaw with QFontDatabase.styleString() returning generic style names
release script: tag release and include prefix in tar ball
Bump version to 2.3
include Alvaro Huarte in AUTHORS (and . => dot)
fix Alvaro's email address (followup 14699030)
avoid 'overwriting' readonly files (fixes #9617)
restore master spash screen
support wmts layers to browser (implements #9492)