Settings - manage wallet, reveal secret phrase

[a-novi]

Also fix:

• header style
• hide bottom navigation
• accounts screen style
• receive screen style

[codecov]

Codecov Report

Merging #214 into master will decrease coverage by 0.14%.
The diff coverage is 48.14%.

@@            Coverage Diff             @@
##           master     #214      +/-   ##
==========================================
- Coverage   46.77%   46.62%   -0.15%     
==========================================
  Files         167      167              
  Lines        2142     2151       +9     
  Branches      452      455       +3     
==========================================
+ Hits         1002     1003       +1     
- Misses       1135     1143       +8     
  Partials        5        5

Flag	Coverage Δ
#unittests	46.62% <48.14%> (-0.15%)	⬇️

Impacted Files	Coverage Δ
src/screens/view-wallet-mnemonic/styles.ts	0% <ø> (ø)	⬆️
src/core/i18n/translation/locales/en.ts	100% <ø> (ø)	⬆️
...c/screens/account/components/view-key/view-key.tsx	7.14% <ø> (ø)	⬆️
src/styles/themes/dark-theme.ts	100% <ø> (ø)	⬆️
.../create-wallet-mnemonic/create-wallet-mnemonic.tsx	89.65% <ø> (ø)	⬆️
src/screens/account/components/view-key/styles.ts	0% <ø> (ø)	⬆️
src/screens/receive/styles.ts	100% <ø> (ø)	⬆️
src/screens/create-wallet-mnemonic/styles.ts	100% <ø> (ø)	⬆️
src/styles/colors.ts	100% <ø> (ø)	⬆️
src/screens/settings/settings.tsx	78.12% <0%> (-3.7%)	⬇️
... and 13 more

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