[BUGFIX] 9234 - WFS client doesn't expose Header Authorization

Like for the others OGC providers: WMS and WCS, the user can set the
login and password to access to WFS protected data. But the QGIS WFS
provider doen't expose header authorization. It doesn't use login and
password.

This patch set header authorization for all WFS connexion if login and
password are set.
And I think this patch has to be backported to release_2-2, because QGIS
can't acces to protected WFS data.
[composer] Correctly handle cancelling shape, overview, grid and page style changes
[FEATURE][composer] Allow setting line join and cap style for scalebars
[FEATURE][composer] Allow filtering rows in attribute tables
[composer] Use QgsMapLayerComboBox for attribute table layer selection
[composer] Allow choice of non-geometry vector layers for attribute table, but disable controls which have no meaning for geometryless tables (fix #9944)
[composer] Correctly update extent when restoring composermap state, except when composer map is not yet visible after loading
[composer] Fix QgsComposerTextTable always blank
Fix drawing order with embedded group
Fix #9532 (node tool crash on a layer with a feature without geometry)
Add QtScript to Mac app bundle (now used in WMS provider)
Bundle any externally linked libs for osgEarth on Mac
Merge pull request #1266 from rldhont/provider_wfs_authorization

[BUGFIX] 9234 - WFS client doesn't expose Header Authorization
[TRANSUP] ro from transifex test and en update

Signed-off-by: Werner Macho <werner.macho@gmail.com>
[composer] add svg export with layers
[composer] Some small fixes to svg layers export, naming improvements, additional comments
expression button and expression capability added to the field model
use a pointer for distance area, do not for the dialog
use a widget for combining field combo with tool button