Bug fixes and improvement of the player experience

- Fixed the input conditions so that values can be quickly changed with a double-click.
- Corrected the description of the Coin Beam.
- Fixed a bug where "Yaruki" was treated as a permanent skill.
- Fixed a bug where skills could sometimes be placed in condition slots.
- Fixed a bug where the delete button wouldn't disappear.
- Fixed a bug where "Big Spin" wasn't dealing damage correctly.
- Improved the tutorial for condition switching.
- Fixed a bug where hints were displayed for characters without hints when switching hints.
- Added an option to move purchased conditions to the top.
- Made the "Difficult" difficulty level harder.
- Reduced the volume of the SE sound for "Investment".