Jordan/2170 explorer mode fixes

[jbibla]

Closes #2170

Description:

• fixed bug in card signed in
• updated sentence on no-proposal message
• hide faucet while not signed in

Thank you! 🚀

---

For contributor:

• Added entries in CHANGELOG.md with issue # and GitHub username
• Reviewed Files changed in the github PR explorer
• Attach screenshots of the UI components on the PR description (if applicable)
• Scope of work approved for big PRs

For reviewer:

• Manually tested the changes on the UI

[codecov]

Codecov Report

Merging #2176 into develop will decrease coverage by <.01%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop    #2176      +/-   ##
===========================================
- Coverage    95.43%   95.42%   -0.01%     
===========================================
  Files          109      109              
  Lines         2299     2295       -4     
  Branches       109      110       +1     
===========================================
- Hits          2194     2190       -4     
  Misses          92       92              
  Partials        13       13

Impacted Files	Coverage Δ
app/src/renderer/components/common/TmPage.vue	100% <ø> (ø)	⬆️
app/src/renderer/scripts/boot.js	97.14% <ø> (-0.3%)	⬇️
...rc/renderer/components/governance/TabProposals.vue	100% <ø> (ø)	⬆️
.../renderer/components/common/CardSignInRequired.vue	100% <ø> (ø)	⬆️
app/src/renderer/components/wallet/PageWallet.vue	96.29% <100%> (ø)	⬆️

[fedekunze]

tested ACK

[sabau]

I was expecting this to be shown, faucet is set and signedIn is true

[sabau]

mrrrrrggggg