Added skill Gui and revised descriptions

- Added skills Gui
- Detailed skill orb tooltips only show up when using advanced tooltips
(F3 + H)
- Ending Blow leaves you vulnerable for twice as long if you miss
entirely
- Nerfed Dash damage by one heart
- Nerfed Sword Beam damage, now does a percentage of base sword damage
- Nerfed Sword Beam master sword version: targets after the first take
increasingly reduced damage
- Reduced Sword Beam exhaustion back to original level
- Fixed: targeting system could 'see' invisible opponents
- Fixed: unable to use super spin attack in creative when missing health