The crafts_table was being initialised to contain only core-registered
crafts, but this would overwrite any non-core craft types that had
already been registered via unified_inventory.register_craft(). This was
especially likely because the crafts_table initialisation runs on a delay,
following all normal initialisation. Instead, feed the core-registered
crafts into unified_inventory.register_craft().
When the current search produces no results, give a specific message
rather than "Page 1 of 0". Don't display the "Filter:" label if no
filtering is currently applied.
Keep the current inventory search string when performing inventory
form actions other than searching. This means the player's input is
not lost if the player breaks off from entering it to switch pages,
or if the player absent-mindedly ends text input with <return>.
get_all_craft_recipes() returns the recipes that were registered under the
specified name, so asking about an item's canonical name won't see recipes
registered under an alias, and vice versa. Several mods register recipes
under aliases, so the craft guide was missing that handful of recipes.
To work around it, invert the aliases table and ask explicitly about
each alias.
