Added propel documentation
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Merge pull request #1473 from ClementGautier/propel_support

Added propel documentation
Fix firefox JS bug on viewing revision
Merge pull request #1477 from tautrimas/master

Fix firefox JS bug on viewing revision
Make confirm on exit optional.
Merge pull request #1476 from coopTilleuls/confirm-exit

Ask before quitting a page with unsaved changes
Fix translation conflict