Face down reworked and hundreds of new cards

New release contains ~450 new cards from PIP, MKM, MKC, CLU and other sets. It also includes new mechanics like Disguise.

Face down cards reworked:

• gui: added special images for face down cards like Morph, Manifest, etc (download it as normal tokens);
• gui: added day/night button to view a real card for controller/owner;
• gui: improved game logs - now it contains a workable object reference (it can be opened with card popup hint like normal card logs);
• game: fixed that faced-down card can render symbols, abilities and other hidden data from a real card;
• game: improved combo support with many cards like MDFC, split, adventure, etc (#11873);
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Improved rendering of some non-standard cards:

• gui: improved Saga cards (#11762);
• gui: improved Adventure cards (#11764)
• gui: improved Class cards (#11767)
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Other fixes:

• images: added tokens for LCC, RVR, MKM, MKC;
• images: no more needs in client restart to apply newly downloaded images or render settings;
• images: improved backface image quality (use main menu -> symbols to download it);
• images: fixed missing tokens from DDD set;
• images: fixed missing images download from SLD and other sets (#11883);
• gui, card viewer: added special set to view all special tokens like face down (XMAGE);
• gui, cards: added missing image info in card popup hint (now it works in any render mode);
• server: improved server stability and fixed bloated logs about game timer;
• AI: fixed wrong timer in computer games;

Abilities fixes:

• Copy abilities - improved stability and cards support;
• Modal double-faced cards - improved support, no more other side effects on battlefield;
• Player under control - improved stability and related cards support (possible NPE errors, additional runtime checks);
• Storm abilities - added card hints with storm counter (#11795);
• Train and Mentor abilities - fixed that it triggers without really put a +1/+1 counter (example: Savior of Ollenbock, #11718);

Card fixes:

• Amend Case of the Shifting Visage - added card hint;
• Blinkmoth Urn - fixed that it's triggering while tapped;
• Eldritch Pact - fixed wrong target choose (#11736);
• Mob Rule - fixed buggy control effect (#11811);
• Myojin of Grim Betrayal - fixed that ability doesn't work with non-battlefield zones (#11721);
• Neyali, Suns' Vanguard - improved exile zone;
• Polygraph Orb - added card hint;
• Shimmer Dragon - added card hint;
• The Enigma Jewel - fixed wrong searching for activated abilities (#11832);
• Training Grounds - improved choices;
• Warden of the Eye - fixed that it has broken in AI games;
• Wayta, Trainer Prodigy - fixed wrong cost reduction (#11782);
• Zombie Mob - fixed wrong trigger;

New cards and reprints for:

• PIP: added ~200 cards from new set;
• MKM: added ~70 cards from new set;
• MKC: added ~50 cards from new set;
• CLU: added ~30 new cards and ~250 reprints;
• ACR: Eivor, Battle-Ready, Haystack, Ezio, Blade of Vengeance;
• ANB: Baloth Packhunter, Compound Fracture, Hallowed Priest, Mardu Outrider, Tin Street Cadet;
• BIG: reprints;
• BLB: Mabel, Heir to Cragflame, Bria, Riptide Rogue, Lumra, Bellow of the Woods, Byrke, Long Ear of the Law;
• ICE: Arcum's Sleigh;
• MH3: Psychic Frog, Scurry of Gremlins, It That Heralds the End, Flare of Cultivation, Snow-Covered Wastes;
• MIR: Torrent of Lava, Acidic Dagger;
• OTJ: Hell to Pay;
• REX: Dino DNA;
• SLD: Lara Croft, Tomb Raider;
• WHO: TARDIS;

Full change history available on GitHub as commits history