Merge branch 'develop'
Merged 'develop'.
Merged 'develop'.
Add Python-Cobol script

from https://github.com/OpenCobolIDE/Python-COBOL
Rename package python_cobol into pic_parser
Add get_field_infos + PicFieldInfo class
Add a test
Merged 'develop'.
Improve pic parser test

(Should faild on Travis)
Add offset calculator icon
Add offsets calculator dock widget
Fix pic_parser to pass the improved test
Add OffsetCalculatorMode
Connect to event and display the pic infos
Merge pull request #21 from OpenCobolIDE/feature/field-offsets

Finish Feature/field offsets