-Closes ticket #945
-Added ability choose in the GUI to load estimated or actual min max values from the band
-Cleaned and reorganized raster properties gui a little
-Added a set default constrast enhancement option in gui that is persistent between sessions
-Closes ticket #1055 and #778
git-svn-id: http://svn.osgeo.org/qgis/trunk@8398 c8812cc2-4d05-0410-92ff-de0c093fc19c