Merge pull request #368 from backesj/develop

Forgot to add the extension point schema in the previous pull request
Avoid exception when writing the model
Merge branch 'develop' of https://github.com/osate/osate2-core.git into develop
 * Simple debugger facility
Add new properties for ARINC653
Start migration to Luna
Introduce the examples wizard
Add fileutils in OSATE
avoid null references
 * Start to implement quick fixes
start implementing quickfix for properties as well
Start to implement specific validation rules for quickfix
removed invalid gitignore file
Ignore derived EReferences in mark occurrences, etc. - fixes #360
Rename the ExampleWizard to be consistent with other class names
Make sure to include the wizard in the plugin.
Fixes #381
Add missing file to build OSATE with luna
Fixes #382
Merge branch 'develop' of https://github.com/osate/osate2-core.git into develop
* provide more documentation for the SCADE model import.
Enable use of task tag fragment - fixes #383
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