iiiftilesource now uses pixel-based syntax 'w,'. level 1 compliance it still required, so backward compatability should not be an issue
removed old, unnecessary files from cache
deleted duplicate iiif 1.1 test tiles
added missing 1.1 tiles
removed duplicate iiif test tile  files (w/ different names) and completed sets
Merge pull request #249 from jpstroop/issue236

IIIF 1.0 now uses pixel based syntax