Fix format legality differences (mostly Alchemy and Historic)

[taw]

Now that Alchemy is implemented, we have no reason to have any differences from mtgjson.

At the start of this issue there are 678 differences (down to 24), mostly Alchemy/Historic, but there's a few others.

Most are bugs in Alchemy/Historic.

I now added restricted legality for Alchemy/Historic for conjured/specialized cards that can't go into deck construction, but can appear in games. I'm not counting this in report below.

Raw report (./bin/report_legality_differences):

Format alchemy - 3 / 3512 differences
* Carnelian Orb of Dragonkind (Alchemy) - mtgjson:legal - db:not in format
* Gnarlid Colony (Alchemy) - mtgjson:legal - db:not in format
* Shorecomber Crab - mtgjson:not it format - db:legal

Format duel - 3 / 29993 differences
* Goblin Gang Leader - mtgjson:not it format - db:legal
* Mardu Outrider - mtgjson:not it format - db:legal
* Velukan Dragon - mtgjson:not it format - db:legal

Format historic - 11 / 13710 differences
* Assault Strobe - mtgjson:not it format - db:legal
* Celes, Rune Knight - mtgjson:not it format - db:legal
* Cloud, Ex-SOLDIER - mtgjson:not it format - db:legal
* Force Spike - mtgjson:not it format - db:legal
* G'raha Tia, Scion Reborn - mtgjson:not it format - db:legal
* Kazuul's Toll Collector - mtgjson:not it format - db:legal
* Terra, Herald of Hope - mtgjson:not it format - db:legal
* Tidus, Yuna's Guardian - mtgjson:not it format - db:legal
* Tifa, Martial Artist - mtgjson:not it format - db:legal
* Y'shtola, Night's Blessed - mtgjson:not it format - db:legal
* Yuna, Grand Summoner - mtgjson:not it format - db:legal

The following are mtgjson bugs:

• duel - all 3 differences are mtgjson bug, source

There's also penny bug in mtgjson, where it doesn't list melded card as in format, even when both parts are in format.