This reverts commit f618e6c6.

(does not actually fix the issue.)

ENH: Mantis-1355 : Apply patch to set OTB_APPLICATION_PATH environment variable in monteverdi desktop file

Put DEM clear and loading in DoUpdate().
This change correct a side effect that was present in DoExecute() function.

Update color of the badge to match that of the delete icon.

Swap delete and delete all buttons order
Change delete icon to be visually more different than delete all

BUG : Mantis-1335 : Increase monteverdi stack size and correct Segfault when rsr parameter is not provided.

Monteverdi stack size is increase in order to use 6s code.
WavelengthSpectralBandVectorType wasn't initialized and result wasn't used.

This reverts commit 2f6bf0da.