Save Flickr rotation info in the "additionalInformation" field of the dataObject, then pass it in to grab_file so that the image can be correctly rotated when harvesting.

This will help with a number of flickr images that have been rotated by hand in Flickr (many BHL images).

The flickr "rotation" parameter includes any rotations specified in the EXIF metadata, so if we have a Flickr rotation value, we should override the EXIF rotation specification.

I'm unsure of the correct way to access the additionalInformation field from within the DataObjects class - a comment is inserted as appropriate. This will probably need changing.
Merge branch 'Flickr_Rotation' of https://github.com/hyanwong/eol_php_code into hyanwong-Flickr_Rotation

Conflicts:
	app/models/DataObjects.php
	lib/ContentManager.php
Enabled Yans new image rotation for Flickr images
Turning some executable paths into constants
More constants
DATA-1325 Problems with Insect Visitors of Illinois Wildflowers connector.
Yearly stats for BOLDS species-level taxa.
Follow-up work for DATA-1321 SINA maps.
Follow-up work on DATA-1274 Rotifers of the World.
Commit after merge conflict.
Forgot to fix the conflict, something.
Follow-up work SINA maps.
Added an Excel to Archive converter
Merge pull request #59 from eliagbayani/master

BOLDS, DATA-1325, follow-up work on DATA-1274, DATA-1321, others.
DATA-1320 Revise connector for Turbellarian Taxonomic Database connector
Quickfix on SINA maps and other tweaks.
Quick code maintenance on BOLDS connector.
DATA-1331 Ingest MCZ archive file - images and type specimen data
Merge pull request #60 from eliagbayani/master

Turbellarian Taxonomic Database and others: SINA maps, BOLDS
Follow-up work on Turbellarian Dbase connector.