Fix issue loading Custom Movesets on page load, other fixes/improvements

[jaybee216]

• Fixes a bug where Custom Movesets would not load from localstorage until you added a new Custom set using the "Save" button.
• Updates the damage summary description to indicate whether the defending mon is Dynamaxed
• Resets the selections for Dynamax, Max Moves, and Crits when switching Pokemon
• Correctly applies Crit modifier to Max Moves when both are selected
• Displays modified Speed stat next to the stat stages dropdown, allowing you to easily compare Speeds after all boosts/stat changes/field effects.