Additions

Allow for moving blocks up or down when using the movable flag in the template tag for blocks.
Move-block view
New log action for moving blocks
Add fetch method for typescript api class
Add tests for move-block view

Changes

Change internals of typescript adapter classes.
Add on_register method for adapters.
Update docs
Update dutch translations
Minor CSS changes
Watch container size when editing dom-field or dom-block nodes; resize iFrame accordingly
Move around internal modules to avoid import cycles when creating the move-block view
Return parent and block's index in find_block method along with the block and contentpath
Change tests for find_block updated return arguments