postgres provider: fix b85af12c
Reactivated 8bit and 1bit mode for QGIS Server

The commit 76d1f955c019c3d42cbab29ce2d147acd233b54a simplified the
mFormat private attribute to PNG, JPG, PDF, etc and created
mFormatString attribute. The second is used for base64 but not for mode.
This commit corrected it.
Add image/png; mode=16bit as a supported format
Activating WMS getStyle REQUEST for .qgs mapfile

A getStyle REQUEST has been developped for SLD mapfile.
qgsVectorLayer has a method writeSld. It was easy to activate getStyle
for .qgsmapfile
skip raster nuller with color types; check data block allocation in block value read, fixes possibly #7807
- integrate function_help and context_help to translation files
- add some german function help updates
- update helpviewer to show help passed into stdin from qgis
Add field calc to main app window
Refactor activateDeactivateLayerRelatedActions
- recover japanese translations lost in 4b76600
- german translation fix
Invert layer crs if wms version is  not 1.1.1 (covers the case where wms version is given as 1.3 instead 1.3.0)
disabled raster data file timestamp check in loading style, fixes #6900
Insert user defined OWS extent for project into top layer of WMS capabilities
[pyqgis-console] allow to disable the object inspector from settings (default it is disabled)
- fixes some translation string
python console setPlaceholderText qt < 4.7 fix
Revert "[qgis_help] Detect proper resource path when running from build dir"

This reverts commit 30b9fedc6adff91be11183c3a1ee3338ac6e0afa.

qgis_help doesn't need to know the install path any more, because it reads from stdin instead of directly opening files
removed raster layer drawing style getter/setter
enabled resampling for wms, fixes #7144
[Fix #7405] Graduated renderer: Feature count 0 with scale or rotation
fixed raster paletted renderer for no data, fixes #7139
[pyqgis-console] uses QFileInfo instead of os.path to check if file exists
- minor fixes and cleanup