Submitting some enhancements

[TaylorPhelps]

Refactoring getProperty method: refactored the getProperty method to handle default values more efficiently and avoid redundant code.

Corrected initialization of static fields: ensured that the static fields in the Config class are initialized properly by reading values from the build.template.properties file.

Handled environment-specific properties: The Config class now handles properties differently based on whether the application is running in a development environment (dev.properties) or a production environment (build.properties).

Fixed logging: ensured that the application logs meaningful information during startup, such as the instance ID, zone rules version, and server startup messages. This helps in monitoring and debugging the application.

[github-actions]

Hi @TaylorPhelps, thank you for your interest in contributing to TEAMMATES!
However, your PR does not appear to follow our contribution guidelines:

• Title must start with the issue number the PR is fixing in square brackets, e.g. [#<issue-number>]
• Description must reference the issue number the PR is fixing, e.g. Fixes #<issue-number> (or Part of #<issue-number> if the PR does not address the issue fully)

Please address the above before we proceed to review your PR.

[weiquu]

Closing as not tagged to any issue. Do read through our contribution guidelines and follow the processes there.