v1.1.7 Update

1. Added Daily Challenge mode.
2. Added MAC version.
3. UI size adjustment.
4. Game balance adjustment:
4-1. Alves's Meditation Enhance_ Fighting Spirit attack increases 20%.
4-2. Nicora_ default health increases to 50.
4-3. Normal difficulty, lower monster difficulty, rearrange some monster skills, remove some debuff skills.
4. Optimization and debugging.