fixes for 2 shapes tools for SAGA 2.1.2
[TRANSUP] pl: GDAL, heatmap
[composer] Fixed assignment of map to legend + no updates when legend is removed

Thanks to Nyall for his help!
Follow up 0bda714

Ensure that mLegendFilterByMap is set before setting the map when
reading legend xml
[composer] Default to setting a map for new legend items

It's friendlier for users, who may not realise they need to set
a map before they can filter legends.
Catch GEOS exceptions when reshape tool is used on non-closed-linestring

And use qWarning() instead of QgsDebugMsg() to make tracing GEOS errors easier
because a stack trace is printed.
Remove workaround for layergroup bug #6938, now fixed
Fix one memory leak + add note to show() calls as they will delete the dialog
Fix #11456 (canvas not refreshed anymore after adding a new feature)

Resorted to a "minimalist" fix - other solutions would potentially break
even more stuff. The handling of non-modal dialogs for add/edit feature
attributes + handling of isModified() should be addressed at some point.
Add raster data type output option to some Processing/GDAL tools otherewise output is always Float64
Add raster data type output option to some Processing/GDAL tools otherewise output is always Float64
[composer] Respect reference point when resizing scalebar and legend

Previously, the reference point (and data defined position/size) were
ignored when scalebars or legends resized themselves.

Fix #11321, #11380
SIP update: expose QgsAttributeAction icon, iconPath and name

Fix #11458
Merge pull request #1648 from gioman/processing_gdal_output_type

Add raster data type output option to some Processing/GDAL tools otherwise output is always Float64
Merge pull request #1647 from Cracert/master

[TRANSUP] pl: GDAL, heatmap
add Processing clip using ogr2ogr to compensate for the bad Clip performances of the native QGIS Clip tool
[TRANSUP] transifex update

Signed-off-by: Werner Macho <werner.macho@gmail.com>
fix processing gdal_rasterize to allow write vector values in a existing raster layer
use QgsCredentials to request wms/ows credentials on demand and wms cleanups (fixes #11184)
added detail about the output