FR : Translation of 3 last plugins (Heatmap, Diagram Overlay and georeferencer
Revert "FR : Translation of 3 last plugins (Heatmap, Diagram Overlay and georeferencer"

This reverts commit decda752933451da5c7672d4b478485171dcdf9b.
fr: references translated
Merge pull request #98 from MarieSilvestre/manual_en_v1.8

Manual en v1.8