Optmizations

[tadeubas]

• Consts for special chars
• Code reuse
• Translations fixes for fr-FR (thx @jdlcdl !)
• Fixes #431
• Simplified github PR and issues templates

What is the purpose of this pull request?

• [ ] Bug fix
• [ ] New Feature
• [ ] Documentation update
• [x] Other

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 87.50000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 94.72%. Comparing base (36deb3f) to head (a8a4297).

Files	Patch %	Lines
src/krux/pages/encryption_ui.py	25.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #433 +/- ## ======================================== Coverage 94.71% 94.72% ======================================== Files 57 57 Lines 7120 7127 +7 ======================================== + Hits 6744 6751 +7 Misses 376 376 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[odudex]

Thank you!