Returns an array of available missions.. Returns an array of available missions each with the following structure:

• description: A short description of the mission
• cost: The cost in resources of the mission
• duration: The display duration of the mission (45 min)
• durationSeconds: The duration of the mission in seconds
• level: The mission level
• type: The display mission type (Combat)
• locPrefix: The mission location with prefix (GarrMissionLocation-FrostfireRidge)
• rewards: A table of the rewards indexed by the reward ID
  • title: Type of reward (currency or xp)
  • quantity: Amount for the reward (item or currency)
  • icon: Display icon for reward (currency or xp)
  • currencyID: ID of currency type (currency only)
  • itemID: ID of item (items only)
  • followerXP: amount of xp (follower xp only)
  • tooltip: string for display in tooltip (xp only)
  • name: display string for reward (xp only)
• numRewards: Number of rewards for the mission
• numFollowers: Number of followers the mission may have
• state: The state of the mission
• iLevel: The required iLevel for the mission
• name: The display name for the mission
• followers: Table of followers assigned to the mission
• location: The display location for the mission(Frostfire Ridge)
• isRare: Whether the mission is of rare quality
• typeAtlas: Prefixed mission type (GarrMission_MissionIcon-Combat)
• missionID: The ID of the mission that is used for other API calls.