wip: LiftImport

- Refactoring LiftDecoder
- Added LiftImportErrorReport
- Added tests for Lift from FLEx
update composer to include changes to web-php-utilities
wip: More FLEx fields.
Added more FLEx field support with tests.
Merge branch 'feature/liftimport'

Conflicts:
	src/models/languageforge/lexicon/LiftDecoder.php
	src/models/languageforge/lexicon/LiftImport.php
Merge remote-tracking branch 'origin/master' into feature/fileupload