UI:
  - #5331 [FIXED] : Solving duplicated entries on Autodiscovery
  - #5503 [FIXED] : When testing activity Fixed length of 10 seconds is now set to song length (if shorter than 10 seconds)
  - #5725 [FIXED] : Added text info when user selects Media Lib or Text2Speech and my.digitalSTROM app is not present or connection to the my.digitalSTROM service is interrupted
  - #5718 [FIXED] : Fixed bug on Autodiscovery when no Players are available
  - #5683 [IMPL] implement improved grouping logic (sequenced global activities); needs to be verified by Roman and/or updated with newer concept

BACKEND:
  - #4564 [FIXED] : When grouping song starts playing when all players are added to group
  - #5507 [FIXED]
  - #5489 [FIXED]

QUALITY LEVEL:
  - Feature freeze release (new grouping, power failure restore)
  - New features are tested (check the \testing\Testing_Matrix.xlsx for results)
  - Test cases added:
    - \testing\TCI-0001 Player group with RESUME always set.txt (18 scenarios)
	- \testing\TCI-0002 Power restore.txt (3 scenarios)
	- \testing\TCI-0003 Media Library not available.txt (2 scenarios)
	- \testing\TCI-0004 Autodiscovery offline players (1 scenario)
  - Release was not completely tested (none of the TCExx test cases) due to urgency of implementing other bug-fixes