Bringing back to life

[kdybicz]

• removing static transactional = false based on https://docs.grails.org/3.3.0/guide/single.html#_the_transactional_annotation_vs_the_transactional_property

• updating node dependencies and migrating gulp files to latest gulp format

• adding package-lock.json file to the project

• making sure System.out is not hijacked as this breaks System.out when multiple scripts are running at the same time and it prevents "captured" logs from being saved to a log file

• fixing project structure and broken code, fixing controller test by adding dependency needed for mocking

• updating handlebars dependency and fixing issue with restricted prototype access - https://handlebarsjs.com/api-reference/runtime-options.html#options-to-control-prototype-access

• adding npm scripts and build.sh file to automate the jar file build process

• update .gitignore

[aadrian]

@sheehan would you please merge this and cut a release?

Thanks in advance.