docman_items_type PATCH route should be deprecated

-rename update button into "create new version" in overview view

existing route behaviour is now spli int two:
- POST docman_item_type/id/version
this route will be used to create a new version of a document

- PUT docman_items_type/id/metadata
this route will be used to update the metadata of document
at the end of epic it should accept following representation:
{
"title": "..."
"description": "...",
"status",
"obsoclesence _date"
"owner"
"custom_metadata: [
{ ... }
]

For folder, we need to distinguish metadata that directly concerns the folder from metadata who will be recursively applied on its children

Proposition of route:

{ "properties" : {"title": "somethign", "description": "xsxsxsxs"}, "default_properties": {"status":"draft", "apply_on": "none|folders|all_items"} }