translated raster terrain plugin and raster supported data to Dutch
Merge branch 'manual_en_v1.8' of https://github.com/qgis/QGIS-Documentation into manual_en_v1.8

include translated work by Raymond Nijssen and Willem Hoffmans
checked on errors after build before commit
Update source/docs/user_manual/introduction/qgis_gui.rst

small fix
Merge pull request #64 from dassau/manual_en_v1.8

Update source/docs/user_manual/introduction/qgis_gui.rst
started translation of general_tools.po
nearly finished qgis_gui.po
fr: working_with_vector started
Merge pull request #9 from junek/manual_en_v1.8

Manual en v1.8
Merge pull request #65 from dassau/manual_en_v1.8

Manual en v1.8
Merge pull request #66 from MarieSilvestre/manual_en_v1.8

fr: working_with_vector started
fr: vector/supported_data update
Merge pull request #68 from MarieSilvestre/manual_en_v1.8

fr: vector/supported_data update