Improved Quick Jump UX

[sumbodhi]

The current UX of the Quick Jump view should be improved, because:

• it has too much padding, should use less
• the Go button looks like a floating action button, should be a regular button
• the input box has a rectangular hover background with no border radius, should have border radius
• the hints too have too much padding
• it'd be great if any of the suggestions are clickable, so for example you can click mn118, it fills it in the input box and opens the sutta

here's how the UI currently looks like: