Items/Ammo/Rewards Refactored and added to Conscripts

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• Added more automation to item ammo.
• Ammo is now taken care of in Item and not ItemWeapon.
• ItemFlags renamed to WeaponFlags
• IsStolen renamed to IsLost and Returned renamed to Reobtained for a
  more vague and fitting description.
• Items now define their own reward information.
• Added LinkedRewards which are rewards that will return a
  runtime-calculated reward in-game. (Returns linked reward in editors)
• Added LinkedRewardItemCurrent (The current level item or obtain the
  item) and LinkedRewardItemLevelUp (The next or capped level item or
  level 1 if unobtained.)
• Added Graphics.RenderTarget which is a subclass of image that confirms
  it's texture is a render target.
• Added CanvasSprite which is a sprite made for drawing at runtime.
• Reward tiles now disable durations of rewards.
• Reward now is initialized with RewardManager so they no longer need
  GameControl called for all functions. IsAvailable changed to a property.
• TextReader no longer crashes with empty messages.
• Completely filled out "font_small" to have all the characters that
  "font_large" has.
• Added NoClingOnStab TileFlag. (No longer used as a property.
• Fixed ScriptManager forgetting to reference ZeldaOracle.Game
  namespace.
• Unmapping no longer crashes with empty sprites.
• Added Item/AmmoSR and RewardSR.
• Texture2DLoader renamed to ImageLoader. Now returns images. (In the
  future, all images will be linked in resources so that they can be
  disposed of)
• Items and Ammo no longer use the "item_" or "ammo_" prefix. (Still
  used in rewards though)
• Added GetEnum to CommandParam.