Add property for global non-ledger notificationBar

[diracdeltas]

Fix #12216

Test Plan:

1. check that there are no new notificationBar test failures in travis
2. go to about:preferences
3. change PDF.JS setting. the 'Restart now?' notification should appear above the tabs bar.

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.

Test Plan:

Reviewer Checklist:

Tests

• Adequate test coverage exists to prevent regressions
• Tests should be independent and work correctly when run individually or as a suite ref
• New files have MPL2 license header

[codecov-io]

Codecov Report

Merging #12330 into master will increase coverage by 0.23%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #12330      +/-   ##
==========================================
+ Coverage   55.29%   55.52%   +0.23%     
==========================================
  Files         276      276              
  Lines       26740    27235     +495     
  Branches     4310     4538     +228     
==========================================
+ Hits        14786    15123     +337     
- Misses      11954    12112     +158

Flag	Coverage Δ
#unittest	55.52% <100%> (+0.23%)	⬆️

Impacted Files	Coverage Δ
app/browser/windows.js	37.53% <ø> (ø)	⬆️
app/browser/api/ledgerNotifications.js	74.56% <100%> (ø)	⬆️
app/common/state/notificationBarState.js	100% <100%> (ø)	⬆️
app/renderer/components/common/switchControl.js	82.66% <0%> (-2.7%)	⬇️
js/constants/windowConstants.js	100% <0%> (ø)	⬆️
app/renderer/components/styles/global.js	100% <0%> (ø)	⬆️
js/actions/windowActions.js	5.02% <0%> (+0.16%)	⬆️
app/renderer/components/common/messageBox.js	88.34% <0%> (+0.59%)	⬆️
js/about/preferences.js	45.98% <0%> (+0.86%)	⬆️
...erer/components/preferences/payment/ledgerTable.js	89.51% <0%> (+1.76%)	⬆️
... and 6 more

[cezaraugusto]

++

[cezaraugusto]

master 8dc6b12
0.21.x 9ccd969
0.20.x 09728fe