Enemy and Skill Rebalancing, World Map and Meditation Improvement, Fixes

[h2]SKILLS[/h2]
Siphon Strike

• Now heals for 30% of your max health on hit.
  
• Mana Cost increased from 75 to 100.
  
• Stamina Cost increased from 75 to 100.
  

Magic Missile now consumes 15 mana per missile instead of 50 mana per second.

Calamitous Strike and Ruthless Charge now use the same hit detection logic as Shield Charge.
Calamitous Strike now uses the same damage area as Shield Charge. This is a buff.

[h2]ENEMIES[/h2]

• Cannon Boss can no longer cancel out of his Cannon ability into a melee attack.
  
• Cannon Boss melee attack speed slightly reduced.
  
• Heavy Knight will now commit to his charge at a longer distance.
  

• World Map now remembers your last selected Act.
  
• Meditation now doubles the speed that cooldowns tick down.
  

• Fixed Calamitous Strike being unaffected by Catastrophic Impacts.
  
• Fixed an issue with the total bonus amount shown for Magic Find passives.
  
• Fixed closing the World Map with the "Back" button while in-game not returning mouse control to the character.