modifications in the background drawing, then many widgets has been moved a little bit.

git-svn-id: svn+ssh://controls01/siciliarep/svn/trunk/tango_client/ctlinac/trunk@13063 a18efa20-c439-0410-bf20-9b91ec695b4c
bugfix cooling loops pressure setModel.
reorder the widgets in the cooling loops popup widget.
add LT vacuum information at the end of the linac. This may help to identify the issue in case VV7 cannot be opened (controlled from the 'start up' tab, and led recently introduced in the 'main screen').