Gui tidy ups:

- use buddies
- set tab order
- get rid of superfluos layouts
- remove colons from labels for sonsistency with other qgis dialogs
- adjust sizing behaviour a little



git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@9193 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: timlinux