Reapply staking refactoring

[faboweb]

Closes #879, #355, #1102

Description:

❤️ Thank you!

[faboweb]

Wait for gaia-8000

[fedekunze]

@faboweb does this addresses #1042 as well ?

[faboweb]

I think yes. We refactored the staking endpoints so that there is not "fractions" anymore. It is just floating point numbers delivered from the LCD.

[codecov]

Codecov Report

Merging #1121 into develop will decrease coverage by 1.13%.
The diff coverage is 78.64%.

@@             Coverage Diff             @@
##           develop    #1121      +/-   ##
===========================================
- Coverage    97.18%   96.05%   -1.14%     
===========================================
  Files           79       81       +2     
  Lines         1525     1595      +70     
  Branches        77       79       +2     
===========================================
+ Hits          1482     1532      +50     
- Misses          36       56      +20     
  Partials         7        7

Impacted Files	Coverage Δ
app/src/renderer/components/common/AppHeader.vue	93.75% <ø> (ø)	⬆️
app/src/renderer/vuex/getters.js	100% <ø> (ø)	⬆️
app/src/renderer/vuex/modules/wallet.js	95.31% <ø> (-0.08%)	⬇️
app/src/renderer/vuex/modules/delegates.js	100% <100%> (ø)	⬆️
app/src/renderer/vuex/modules/delegation.js	100% <100%> (ø)	⬆️
app/src/renderer/connectors/lcdClient.js	92.59% <100%> (+1.68%)	⬆️
app/src/renderer/vuex/modules/node.js	96.77% <100%> (+0.05%)	⬆️
app/src/renderer/vuex/store.js	100% <100%> (ø)	⬆️
app/src/renderer/connectors/lcdClientMock.js	97.43% <100%> (+2.24%)	⬆️
app/src/renderer/vuex/modules/validators.js	100% <100%> (ø)	⬆️
... and 7 more

[faboweb]

As discussed with Billy I reapply these changes now. They will not work with Gaia-7005!