Update Grammar Index Quick Search

[SethClydesdale]

This issue serves as tracking for improvements made to the Grammar Index's quick search. These improvements entail:

• adding ability to search using kana, kanji, or romaji.
• adding ability to search using English keywords for grammar points.
• adding Furigana to grammar point titles.

Lessons that have been updated:

• [x] Lesson 1
• [x] Lesson 2
• [x] Lesson 3
• [x] Lesson 4
• [x] Lesson 5
• [x] Lesson 6
• [x] Lesson 7
• [x] Lesson 8
• [ ] Lesson 9
• [ ] Lesson 10
• [ ] Lesson 11
• [ ] Lesson 12
• [ ] Lesson 13
• [ ] Lesson 14
• [ ] Lesson 15