Expansion of the functionality of observers and replays.

[vaut]

Observers and replays were very welcome functionality. Many thanks for the work done. There is still a lot to improve. Most of the wishes have already been voiced, but due to the complexity of the implementation, they were postponed.

1. ~~Button for specstats~~ #2370
2. ~~Add kills and units to specstats~~
3. ~~Show life of buildings and units when pressed~~ #2528
4. Open factories and labs of players and display orders for them
5. Replace the global map visibility with the total view of all players
6. Simplify hosting as an observer
7. ~~Reduce lags by observers. Now the network lag causes the instant play of several ticks of the game, which is very tiring.~~ #2338
8. Overhaul speed control in replay. The number of speed steps is too low and the maximum speed is too low. You can allow the speed to be changed as in debug mode.
9. Compress replays into an archive.
10. The ability to connect to the ongoing battle as an observer. (play an incomplete replay)
11. Open replay files with the game from the file manager.
12. Reduce the number of displayed items in streamer mode.

[Next67]

From my own replays, I can add that I would like to see:

1. Rewind.
2. Jump for any time using a set of time digits or stream lane.
3. An indication of the total replay time.

Replays are great functionality for the game and I want it to be convenient.

[vaut]

[vaut]

Total power acquired should go on the list