Custom contextmenu entries for apps.
Required file type for the .Contextmenu file: contextmenu-1.
All files within that .Contextmenu file will be listed in the contextmenu for
files that have a type pointing to the given app.
For example if the app contains the file .Contextmenu/edit
with the file title Edit, a contextmenu entry with the label Edit will show
up. The entry is a link pointing to .Contextmenu/edit with 2 extra query
parameters:
path - which is the path of the file for which the contextmenu was opened, andreturn - which is the full URI of the page where the user clicked the Edit
contextmenu entry (including query parameters).There are no restrictions on the file type of .Contextmenu/edit, but it is
expected that the .Request method will be defined on the edit file. This is
not currently enforced but may be in the future.