Improve global configuration

[strangelookingnerd]

Improve the global configuration page and corresponsing code.

• Move to Security tab -> up for discussion, however I think right now it belongs there
• Clearer description of config options -> I found Disable OWASP Markup Formatter and If checked, HTML content will not be formatted according OWASP in badges and summary not really helpful as the abbreviation OWASP may not be known to everyone
• Remove dead / outdated / unneeded code in BadgePlugin

Testing done

Verified configuration is still working and visually pleasing:

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1. Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
2. Ensure that the pull request title represents the desired changelog entry
3. Please describe what you did
4. Link to relevant issues in GitHub or Jira
5. Link to relevant pull requests, esp. upstream and downstream changes
6. Ensure you have provided tests - that demonstrates feature works or fixes the issue

[mPokornyETM]

LGTM

[mPokornyETM]

@strangelookingnerd @MarkEWaite pls update the documentation and or release notes, that this is a braking change. We use this option in JCaC and currently after last update will Jenkins no more starts. The solution is to move the config entry like #154
thx