General - Fix Title Caps

Per https://groups.google.com/forum/#!topic/zaproxy-develop/FPwvyHY5rb4

Refs:

• https://www.zaproxy.org/docs/developer/dev-rules-and-guidelines/#style-guidelines
• https://capitalizemytitle.com/#Chicago

How-to

• Run ZAP (from a feature branch made from an up-to-date develop branch).
• Look around the UI for something that isn't properly title caps.
• In your IDE search for the string noted in the previous step, in Messages.properties.
• Find the one that has a key name that reasonably describes the place you saw it (if there are multiple matches).
• Make the adjustment, re-start ZAP. Check that the UI is using the string you set.
• Commit, push, open a PR.

Note: Some of the strings may be from Messages.properties files found in the zap-extensions repo.

Edit (20201009): To be clear for new contributors; changes should only be made to Messages.properties the files for other locales are translated via CrowdIn:

• https://crowdin.com/project/owasp-zap
• https://crowdin.com/project/owasp-zap-help

Edit (20200428): This is also intended to be tackled bit by bit, and is a perfect issue for a new user to complete "something" on as they get familiar with ZAP/GitHub.

Edit (20250311): You can check out ZAP's dev docs here: https://www.zaproxy.org/docs/developer/