Change status of all segments in the current filtering / selection

It should be possible analogous to locking and unlocking segments for all segments in the current filtering to set the editing status of a segment to the respective final editing status of the current segment for the current workflow step.

If done so, also the segments should be saved in the same way, as they would be saved, if saved manually.

A warning pop-up should tell the user:

EN: All segments will be saved to the task and TM, as they would when opened individually.
Two Buttons: "Continue" / "Cancel"

DE: Alle Segmente werden in der Aufgabe und im TM gespeichert, wie wenn sie einzeln geöffnet würden. Weitermachen?

Two Buttons: "Weiter" / "Abbrechen"

Analogous to change the editing status of all within the filtering, it should be possible to select multiple segments by Keyboard shortcut or mouse and change the status for the selected ones.

Questions to handle

• Bulk user feedback in case of errors (for this TRANSLATE-3543 'Move "toast" messages and warnings to an extra tabular view' should be implemented
• Validate that bulk background-saving of segments to TM works and handles errors correctly
  • TM not reachable: segments are then saved later; issue is communicated to the front-end;
  • if segments can not be saved to the TM after X tries, all such update workers to the TM should be defunct, the PM informed (by adding a task log error only? seperate mail?)
  • The repeated save to the TM and threshold to interrupt should be completely handled in the level of that worker