Segment history - rollback of changes in the GUI

A segment history will be implemented in translate5:

• The history shows all previous revisions of a segment of the same translate5-task including all segment metadata and including the initially imported version
• Change markers (see below) show the changes to the previous revision
• By choosing a revision (the revision must have an mouse over effect) the revision is taken over as current segment content
• For revisions, that are taken over, the translate5 metadata "last editor" will be the person, who did take over the revision.
• For revisions, that are taken over, a new translate5 autostatus "restored from history" will be introduced.
• the history will only show the history entries of the current target alternative
• for history entries, which originate from MRC-workflow-steps: the previous revisions (which technically originate from different target alternatives) will be shown in the current target alternative in the segment history.
  • They will be marked as originating from different branches in the workflow to show.
  • This shows, that they are not revisions from each other.
  • Their change markers will not point to the previous revision in the change history (as normally) but to the previous revision which originated from the same branch.