*system has arrays of read only and modified components
*new attribute "readonly" usable for variables which should be visible as read only. Const can be used instead for enable checks by compiler.
*JobGroup was added. JobGroup contain array of jobs and array of dependencies (JobGroups)
*new function generateDependencies() generate exclusion between systems, and then generate dependencies for SystemCallers and JobGroups
-fixed issue with jobs generating (empty blocks with only newly added entities was used, and led to crash)
-fixed small typo mistake
