further translation
finished translation
fr: vector/supported_data finished
Merge pull request #69 from MarieSilvestre/manual_en_v1.8

fr: vector/supported_data finished
nl: updated translations docs preamble
further translation of general_tools
Merge pull request #10 from junek/manual_en_v1.8

Manual en v1.8
Merge pull request #70 from dassau/manual_en_v1.8

Manual en v1.8
fr: conventions correction
Merge pull request #71 from MarieSilvestre/manual_en_v1.8

fr: conventions correction