Added further JSONP self test files

[HolQue]

2 import trees running in parallel

"[import]" : "./dynamic_imports/parallel_import.jsonp"

Result:

{'AA': 'AA',
 'BB': 'BB',
 'CC': 'CC',
 'DD': 'DD',
 '[import]': '... /dynamic_imports/AA/BB/imported.BB.P.2.2.jsonp',
 'level': 'DD.P.2.1.2'}

But expected:

• 'level': 'DD.P.2.2.2'
• Import of 'imported.BB.P.2.2.jsonp' resolved

[test-fullautomation]

Hi Holger,
very good!
Thank you,
Thomas