Added reverse compability in models: insufficient properties are now beeing added during models loading
Merge branch 'subprograms' of github.com:dvvrd/qreal into backward-compability
Some extended fixes
Merge branch 'master' of github.com:qreal/qreal into backward-compability

Conflicts:
	qrgui/models/details/logicalModel.cpp
Merge pull request #951 from dvvrd/backward-compability

Backward compability