Save pedigree user preferences

Description

Implement machinery to save/load user preferences in pedigree.

As discussed, for now cookies will be used, since changing XWiki user profile is more complicated and first a more global user-preferences-manager code should be designed/developed.

First use case is to never show the "you can drag" hint again after it is closed

Environment

None

Status

Assignee

Andrew Misyura

Reporter

Andrew Misyura

Labels

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External issue ID

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External issue ID

None

Epic Link

Components

Fix versions

Priority

Medium