[web+ocis] Make default link permission configurable

[tbsbdr]

Description

User Stories

• As an Admin I want to set the default link permission so that it fits to the policy of my organisation.

• As an Admin I want that ownCloud provides privacy by default so that I don't need to take care of privacy focused settings.

Value

• provide privacy by default

Acceptance Criteria

• provide an ocis config option + capability for the default link permission
• Options correlate to:
  • Only for invited people
  • Anyone with the link can view
  • (tbd: should we provide the other roles as well? I can hardly imagine usecases where Anyone with the link can edit should be the default)
  • Default correlates to anyone with the link can view, i.e. permission 1
• Investigate: does a default link permission of 0 conflict with a default password policy? permission 0 links must always be created without password.

Definition of ready

• Everybody needs to understand the value written in the user story
• Acceptance criteria have to be defined
• All dependencies of the user story need to be identified
• Feature should be seen from an end user perspective
• Story has to be estimated
• Story points need to be less than 20

Definition of done

• Functional requirements
  • Functionality described in the user story works
  • Acceptance criteria are fulfilled
• Quality
  • Code review happened
  • CI is green (that includes new and existing automated tests)
  • Critical code received unit tests by the developer
• Non-functional requirements
  • No sonar cloud issues

[tbsbdr]

CC @michaelstingl

[kulmann]

I'm kind of confused by this story... the password story ( owncloud/ocis#7682 ) is a good idea, but locking everything down in the first place seems to me like it will prevent successful/easy collaboration.

[tbsbdr]

@hodyroff what is your take on that?

[hodyroff]

I think as an admin I like to decide if the the default for my users shall be "invited people" or "link". Later the decision should be delegateable to Spaces and/or to Users (advanced settings). Default should be "invited users".
If its sysadmin as a first step, thats ok.

[tbsbdr]

Update: revised the initial comment; applied agile story-format;