Fix nightbuild
Bug #187 : Comparison based on the user is not sufficient, one must compare usages based on the referenced element
Bug #187 : Functions were not taken into consideration during background compilation (hence, where compiled on the fly)
Bug fix #187 : Functions were not taken into consideration when computing usages
Corrected handling of mode change
This was for debug purposes
Allows to display subelements of substructures
Position the selection combo box so that is it always visible
Merge branch 'motherERTMS/master'

Conflicts:
	ErtmsFormalSpecs/doc/specs/subset-026/DMI.efs_ns