german translation update
Plugin installer: fix support for qgisMaximumVersion tag.
Plugin installer: add ?qgis=[QGIS_VERSION] GET parameter to each repository URL to allow filtering also on reposiotory side
remove invalid layers from zip test files
restore zip raster layer style test - still needs a test for vector layers
Allow adding QToolButton's to the toolbars
 * iface.addToolBarWidget()
 * iface.addRasterToolBarWidget()
 * iface.addVectorToolBarWidget()
 * iface.addDatabaseToolBarWidget()
 * iface.addWebToolBarWidget()
translation update: Danish by Jacob