Remove autocorrect/spellcheck from card text search fields

[bhollis]

Safari on macOS and iOS will rather aggressively auto-correct text in input fields if it believes the text has been misspelled. Unfortunately its default dictionary does not contain the wide variety of Star Wars names and terms and often autocorrects them to other words, which makes it tough to search SWDestinyDB (especially on mobile).

This change disables autocorrect on card search textboxes using the following attributes:

• spellcheck to disable spell check underlines
• autocapitalize because the search is already case-insensitive.
• autocorrect a nonstandard Safari-only option that disables inline autocorrect.