Option to allow any database member to write revisions for a specific document type

[OldSneerJaw]

There are cases where any user, so long as they have provided valid authentication, should be allowed to add, replace or remove documents of a particular type. Provide a document definition configuration option to enable this behaviour on a case-by-case basis for each document type.

For example:

{
  myDocType: {
    typeFilter: ...,
    allowUniversalWriteAccess: true,
    propertyValidators: ...
  }
}

Note: when set to true, this configuration option should override any authorization rules specified by the authorizedRoles and authorizedUsers constraints.

[OldSneerJaw]

Resolved by commit 05899e0.