small fixes and improvements

This patch fixes some bugs and adds some small improvements.

Fixes:

• Shop/Upgrade tooltip box now is more responsive

• Fireball SFX now mute correctly

• Permanent tome bug fixed

• Crit/Block effects are now playing correctly for all units

• Coin track no longer overflows

Improvements:

• Some upgrades were renamed and their descriptions are now more consistent

• Added a toggle to disable screenshake

• Daily deals for common and rare units are 1c cheaper

• Monk and Paladin are slightly more powerful

• Boss HP bar divisors to help visualize the mastery thresholds