Image Magick Thumbnail Creator
Adding license per travis build errors
Default settings for ImageMagick Thumbnail Filters
Migrate LIT filters to IM filter

Per DSpace PR discussions
Clarify messages, improve label checks
Rm LIT files, name change req in DSpace Tech mtg
class rename
Static methods for reuse by curation system
Update config comments for filter plugins
Java 7, re-enable getReaderFileSuffixes
Merge pull request #603 from Georgetown-University-Libraries/ImageMagickThumbnails-clean

DS-2105: Create Thumbnails Using ImageMagick