Try to use the project CRS and last selected image format when adding a layer from the browser
Add python bindings for added methods
Fix LayerTreeModel use of beginInsertRows with embedded legends

See http://hub.qgis.org/issues/11905
Merge pull request #1310 from manisandro/adjust_crs_drop_from_browser

Try to use the project CRS when adding a layer from the browser
Reset rotation on new project

Closes http://hub.qgis.org/issues/11832
Disable support for canvas rotation by default

Rotation support can be enabled at runtime exporting the
QGIS_ENABLE_CANVAS_ROTATION variable (set to any value)