General Cleanup Black Flag Support

Some general cleanup and some adjustments for black flag support.

Black Flag Roleplaying made some significant changes to Eldridtch Invocations, Metamagic and Pact Boons. These are intended to power compatible with previous versions, but even though the same named versions are very similar there are some subtle differences. These changes make it possible to prefer versions for Black Flag where desired as well as allowing versions that work across the game systems. These changes in conjuction with updated versions of Black Flag Reference and Tales of the Valiant fix most of the user experience.

• Class columns that pick custom types now prefer the game system that matches the class. This should allow metamagic and eldritch invocations pick the correct game system.

• Custom types can have Black Flag, 5E or Any for the game system. This allows publishers to pick any when designing versions that work for both systems.

• User Pick custom types now allows for a preferred game system with Any being the default. Generally user pick doesn't care, but when a custom type is shared across game systems a preference can be specified.

With multiple versions of same named entries we made some changes to make it easier to tell where content comes from to make selecting better.

• Change how sources are displayed for entries. Instead of showing the package the value now shows the books that publish the entries. Hover on the source field still shows the package which is generally only needed when debugging complicated packaging scenarios, like same entries in multiple packages.

• Show publishing book in search when duplicate entries are shown to making picking correct value easier, for example fighter with both the 5E an Black Flag versions.

Some general fixes:

• Add back code to show casting/dc information for classes.

• Add code to show display values in monster block for custom stat blocks.