BUG: MANTIS-929 (tree-widget item disapears when dropping in OTB-App ) WORK IN PROGRES: ok on Linux 64 with Qt 4.8.1; to be tested on Windows 7 64/32.

MRG: Merged changeset 41364b042ac7 (MANTIS-929 work-in-progress fix) branch into working directory (changeset f298c157a8e7).

BUG: MANTIS-934 workaround (disable DatabaseBrowserWidget::SetCurrentDataset() when Qt version is less than 4.8.1).

ENH: Optional system to disable rendering (usefull when debugging some features while using remote-desktop connection).

BUG: MANTIS-933 (added accept drag-move event back when cursor is getting back over item-list); TRANS: Added translation for 'form'.

ENH: Disabled 'Rename dataset' action from contextual menu (DatabaseBrowserView) when dataset is disabled.

BUG: MANTIS-921 -- Synchronized deletion of BackgroundTask when TaskProgressDialog has been accepted.

BUG: MANTIS-908 (persistence of gamma); ENH: Updated MVD2 version to 0.7.3; updated MVD2 data version to 0.7.3; REFAC: Refactored ColorDynamicsController/Widget gamma functions (factorized log/exp formula into Widget, added missing disconnect gamma-slots); Removed debug traces.