Improve view usability for small screened devices

[zquestz]

This fixes a bunch of issues in Neutrino for smaller screens. I tested these changes on 2 different emulators:

Larger screen -> Pixel 2 (1080x1920) 5 inch display Smaller screen -> Nexus One (480x800) 3.7 inch display

• Tor flow initial screen no longer flows off the bottom.
• Recovery flow now works, you can see the CONFIRM button.
• Normalized margins, titles, and content sizes.
• Security PIN view now works, although it does appear smaller on larger phones it is still very usable with enough button press room.

I had to remove a little of the text from the backup flow. If we shrink the font it is illegible on larger screens, if we keep it, then the text flows off the bottom of the screen and they can't read it on small phones.

I would suggest testing it out in a similar setup. Some of the screens do look a bit different on a larger phone, but I think it is worth it for increased compatibility.

[cpacia]

So I think I'd like to see if we can find a way to fix these views for small screens in a way that doesn't interfere with the large screen look. As it stands I think the difference between this and what the screen large screen looks like without this PR is enough to warrant investigating other way of implementing this change.

[zquestz]

Just to be clear, the only change you consider a blocker are the pin pad changes? I will look into another way to do this.

[zquestz]

Closing. Will reopen with cleaned up version when ready.