[DDC-2429] Fix xsd definition
Fixed generating join column names for self referencing entity.
Add missing mapping files
ready
forget add changes
remove comment about cli-config
add debug variable and check for loader
Merge pull request #672 from hell0w0rd/simplification_example

Simplification example
Merge pull request #669 from hason/many_to_many

Fixed generating column names for self referencing entity.
Merge pull request #666 from FabioBatSilva/DDC-2429

[DDC-2429] Fix xsd definition