c&r: ignore clicks outside of crop box

please everyone, test this. c&r is a little delicate wrt. changes.
usermanual: update list of contributors
dt_tag_detach_by_string(): use DT_DEBUG_SQLITE3_PREPARE_V2
dt_tag_get_suggestions(): use DT_DEBUG_SQLITE3_PREPARE_V2
dt_tag_reorganize(): use DT_DEBUG_SQLITE3_PREPARE_V2

FIXME: dt_tag_reorganize() appears to be unused?
demosaic: make sure input and output buffers are same size when doing 1:1 demosaic.
Merge branch 'master' of https://github.com/darktable-org/darktable
Minor French translation update of the usermanual after a git pull upstream master