New features for players:
* Loading for multiplayer. Any save could be used for multiplayer.
* Restart for multiplayer. All clients will restart together.
* Loading from single save.
* Hotseat mixed with network game. Multiple players per client.
* Now connection to server could be cancelled.
* Return to menu on disconnections instead of crashes.
* Restoring of last selected map, save or campaign on next run.
TLDR on important changes in engine code:
* UI: work with server separated from UI
* UI: all explitic blitting replaced with IntObject's
* UI: all new code use smart pointers instead of DISPOSE
* Gameplay always start through lobby controlled by server.
* Threads receiving netpacks now shared for lobby and gameplay.
* Campaigns: heroes for crossover now serialized as JsonNode.
Long time ago it's was used without prefix to make future switch from boost to std version easier.
I discusses this with Ivan and decide to drop these using from Global.h now.
This change wouldn't break anything because there was already code with prefix for each of three cases.
- fixed bug when loading victory/loss conditions of the 3rd scenario in the first ROE campaign
- fixed bug when loading artifacts to hero of the 3rd scenario in the first ROE campaign (due to corrupt H3M map)
- implemented function object to quickly find a object by it's sub ID in a list
- added netbackbase.h to header list in CMake
- removed false message which said that the server loaded the map successfully
- credits screen will use multi-line label instead of hackish usage of text box
- campaign intro movie player now plays voiced intro
- minor fixes to last commit