permission manager fixes

[DenysVuika]

PR Checklist

Please check if your PR fulfills the following requirements:

- [x] The commit message follows our guidelines: https://github.com/Alfresco/alfresco-content-app/blob/master/CONTRIBUTING.md#commit
- [ ] Tests for the changes have been added (for bug fixes / features)
- [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application / Infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

• fir i18n for "add" button
• fix dialog layout (ADF issue workaround)

Before:

After:

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[codecov-io]

Codecov Report

Merging #778 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development     #778   +/-   ##
============================================
  Coverage        52.54%   52.54%           
============================================
  Files              106      106           
  Lines             2908     2908           
  Branches           575      575           
============================================
  Hits              1528     1528           
  Misses            1301     1301           
  Partials            79       79

Impacted Files	Coverage Δ
...permission-manager/permission-manager.component.ts	17.64% <ø> (ø)	⬆️

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