Add Italian translation
typo
remove testing on plone 4.2
remove old js
plone.app.drafts are optional
added development buildout
fix image scale: fallback to tile data dictionary to get the image content
update changelog
typo
Add a setUp method to share code within tests
Add utf-8 headers
Keep imports sorted
Do not run persistent_drafting test by now

It exercises plone.app.drafts which is not developed further nor
maintained.
Get the absolute URL only once
Fix to not crash when plone.app.tiles-registry contains missing tiles
Use unittest non deprecated aliases
Fix test_transient_lifecycle

Bring it up to date to the current code.
Fix test_persistent_lifecycle
Fix flake8 errors
Add Travis and PyPI badges