4.2-051: added metadata extraction
4.2-051: made metadata parser more versatile with extracting information from tags.
         - styling changes that won't impact how code is run.
4.2-051: fixed small thing in last commit (on metadata parsing)
4.2-051: added check for whether exiftool exists at all before running the rest of the metadata extractor.
Media Library: Updated IPTCDataExtractor, which wouldn't detect exiftool in a linux environment
SP-1013: Added improvements to IPTCDataExtractor, including renaming it to IPTCMetadataParser
Merge pull request #15 from southpawtech/SP-1013

Sp 1013