Update lighttable.c

fix for #10060 - persistent mouse hover issue in zoomable lightable when mouse has left the view manager.
Zoom centered on cursor: no exception when scale=1
Merge pull request #649 from moopmonster/master

Update lighttable.c
Merge pull request #702 from josepvm/master

Catalan translation: fixed all remaining fuzzy translations
hdr merge: fix a few purple spots

still this is somehow fishy. i don't think the weighting really chooses
the optimal images so far, highlights blow much earlier than the best
input shot.
Updated Dutch translation
Updated Dutch translation
Merge pull request #703 from MRIG/master

update dutch translations
Merge pull request #663 from sgimenez/zoomfix

Zoom centered on cursor: no exception when scale=1
Updated Catalan translation