Improves training file handling

Improves the handling of the xml training file to make it safer.
Fixes #61.
Improves SpareParts.cfg

Improves the spare parts config file by including SandWorm's edits,
modified to fit the original distribution.

Closes #59
Removes Unity compatibility check

Closes #62
Adds CKAN support
Fixes build events for MiniAVC
Updates changelog
Merge pull request #64 from Ippo343/Alpha4.3

Alpha 4.3