Version 1.0.15
Bug fix (null reference exception)
Saved in new format (empty initial states removed)
Provide the requirements of the model element and the enclosing model elements
Implemented reception of radio network registration order from trackside
Merge branch 'OpenETCS/master'
Remove duplicated comments
Avoid compilation error when creating preconditions
Ignore trailing white spaces when considering the prefix
Corrected states with RBC contact orders
Merge branch 'OpenETCS/master'
Implementationf of §3.5.6.7 (if no mobile terminal is registered, an order to contact an RBC is rejected).
Allow to refactor StructureElements
Ensure everything is compiled before displaying the dropdown
Merge branch 'Upstream/master'

Conflicts:
	ErtmsFormalSpecs/doc/specs/subset-026/TestFrames/Shunting Initiated by Driver - Functional tests.efs_tst
	ErtmsFormalSpecs/doc/specs/subset-026/TestFrames/Start of Mission - Functional tests.efs_tst
	ErtmsFormalSpecs/src/DataDictionary/src/Rules/PreCondition.cs