Make KanjiPicker popup on click

[jorgebef]

Upon clicking the selected kanji, a popup should appear with:

• [x] Onyomi
• [x] Kunyomi
• [x] English meaning
• [x] Sample sentence of the day

[jorgebef]

7468abf84dbe1ee8877fa2d22d0e5142c0b20617 implements basic popout, missing:

• [x] styling

[jorgebef]

Implementing an improved popup for the KanjiPicker grid in a8f62008a67825f8c850a6c7ea45d89945054326

[jorgebef]

Further styling is required as popup seems rather hard to read, especially the phrases.

• [ ] Easier reading of the phrases
• [ ] More separation of elements in the popup
• [ ] Adding section for sound and implementing all functionality as per #5