* Rename param for consistency
* Move media loading functionality into DictionaryImporterMediaLoader
* Create test class for media loading
* Remove unnecessary Blob/Image/URL functionality
* Update dictionary settings structure to use an array instead of an object
* Update ensureDictionarySettings implementation
* Remove some usage of ObjectPropertyAccessor
* Add double-down-chevron.svg
* Add options
* Update dictionary importers
* Update settings
* Add support for collapsible definitions
* Improve case when there is a very small amount of overflow
* Fix incorrect enabled state of newly imported dictionaries