Experiments with image plugins
WIP
WIP: choose an image from the product instead of url
Improve style of image dialog
More improvements, add pointer on hover and rel attr
Remove image plugin, select right image on edit
Fix image selection for more than 1 product
Fix css mistake
Fix typo, add title to images
Merge branch 'master' into ckeditor-image-plugin

Conflicts:
	shop/client/src/main/resources/assets/common/javascripts/mayocat.js
Factor entity initialization in the base mixin + send an event with the
entity type and URI
Adapt image plugin to renamed config property
Experiments with image plugins
WIP
WIP: choose an image from the product instead of url
Improve style of image dialog
More improvements, add pointer on hover and rel attr
Remove image plugin, select right image on edit
Fix image selection for more than 1 product
Fix css mistake