Various minor visual issues

[jagodarybacka]

These are minor and should be pretty easy to fix:

• [x] password strength tooltip is overflowing screen
• [x] Rootstock has no color assigned in the Portfolio's networks stats chart
• [x] edit name error label should be above the input border
• [x] in activity details address name overflows its element

[jagodarybacka]

• [x] center Shared Button's loader
• [x] make NFTs filters slideup's content full height (no whitespace at the bottom)