Appraisal

* Added appraisal system: extra lore is added to item tooltips
* Added appraisal support for items
* Added appraisal support for blocks
* Added appraisal support for fluids
* Added /appraise command: allows for the viewing the appraisals of items and blocks abstractly
* Added appraisals for the following:
  * Stone (plus slab variant)
  * Cobblestone (plus slab, stair and wall variants)
  * Mossy Cobblestone (plus slab, stair and wall variants)
  * Granite (plus slab, stair and wall variants)
  * Polished Granite (plus slab, stair and wall variants)
  * Diorite (plus slab, stair and wall variants)
  * Polished Diorite (plus slab, stair and wall variants)
  * Andesite (plus slab, stair and wall variants)
  * Polished Andesite (plus slab, stair and wall variants)
  * Bedrock
  * Smooth Stone (plus slab variant)
  * Stone Bricks (plus slab, stair and wall variants)
  * Cracked Stone Bricks
  * Chiseled Stone Bricks
  * Infested Stone (item only)
  * Infested Cobblestone (item only)
  * Infested Stone Bricks (item only)
  * Infested Mossy Stone Bricks (item only)
  * Infested Cracked Stone Bricks (item only)
  * Infested Chiseled Stone Bricks (item only)
  * Gravel
  * Empty Fluid (plus bucket)
  * Water (plus bucket and moving variants)
  * Lava (plus bucket and moving variants)