Jordan/1283 language refactor

[jbibla]

Closes #1283

Description:

• many language changes based on info from @rigelrozanski (refactor / update language to match current understanding + terminology #1283)
• didn't change any vuex modules which should still be done to complete this "epic" (rename and clean up staking vuex modules #1381)

[codecov]

Codecov Report

Merging #1383 into develop will decrease coverage by <.01%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop    #1383      +/-   ##
===========================================
- Coverage    95.16%   95.16%   -0.01%     
===========================================
  Files           83       83              
  Lines         1656     1654       -2     
  Branches        84       84              
===========================================
- Hits          1576     1574       -2     
  Misses          71       71              
  Partials         9        9

Impacted Files	Coverage Δ
app/src/renderer/components/common/TmBalance.vue	100% <ø> (ø)	⬆️
...pp/src/renderer/components/staking/PageStaking.vue	100% <ø> (ø)	⬆️
...c/renderer/components/staking/TabMyDelegations.vue	36.17% <ø> (ø)
.../src/renderer/components/staking/TabValidators.vue	95.12% <ø> (ø)	⬆️
app/src/renderer/routes.js	100% <ø> (ø)	⬆️
...pp/src/renderer/components/common/TmOnboarding.vue	100% <ø> (ø)	⬆️
...pp/src/renderer/components/staking/LiValidator.vue	100% <100%> (ø)	⬆️
.../src/renderer/components/staking/PageValidator.vue	98.48% <100%> (ø)	⬆️
app/src/renderer/components/wallet/PageWallet.vue	86.84% <100%> (-0.66%)	⬇️
...rc/renderer/components/staking/DelegationModal.vue	100% <100%> (ø)

[fedekunze]

utACK. We should open an issue to change what's left

[jbibla]

already did! #1381