* rework extension service, separate file with config
* improve loading, optional entries
* simplify config and unify content actions
* load and merge multiple files
* improve plugin loading, introduce second demo
* move demo stuff to a plugin
* rework navbar to make it pluggable
* code and naming convention cleanup
* extension schema
* switch off custom navbar group by default
* hotfix for facetQueries issue
* consolidate files, final renames
* toolbar separators
* remove the need for "target" for separators
* simplify code
* menu stub, reducing separators
* toolbar action component
* render menu items
* menu items
* introduce "create folder" action
* track opened folder via store
* "create folder" action, support mulitple targets
* fix card view colors and toolbar layouts
* basic support for permissions
* simplify create menu and add permissions
* add toolbar separators for extension entries
* "edit folder" extension command
* minor code improvements
* initial structure scaffold
* core extensions module
* simple navbar composition
* allow using app routes instead of registered
* migrate to new navbar setup
* remove commented out tests
* populate toolbar
* evaluate expressions
* redirect to url from toolbar
* populate "open with" viewer menu
* update test setup
* experimental flag for extensions
* test fixes
* fix tests
* code improvements, order support
* improve routing management
* populate "create" menu
* extra dictionaries for spellcheck
* allow disabling extension content
* support file/folder targets for toolbar actions
* add safety check
* navigate directly
* toolbar actions for all pages
* support route data
* "experimental" flag for "create" menu extensions
* code fixes
