[Upgrade] This commit upgrades to the current grails grails 2.4.3 and removes appName from URLs, port 8080

This commit brings this app back to life after upgrading to grails 2.4.3. It simply uses the
hostname and port 8080 instead of 9000 (since that's the default).

*	new file:   .gitignore
- Adding the git ignore with the target directory.

*	modified:   application.properties
- Upgrading to 2.4.3
- Removing plugins now declared in the BuildConfig.groovy

*	modified:   grails-app/conf/BuildConfig.groovy
- Updating the script following the "github"'s app docker-registry-web
- keeping the tomcat plugin and others

*	modified:   grails-app/conf/Config.groovy
- Changing the serverURL to point to the app without the appName.

*	modified:   grails-app/conf/DataSource.groovy
- The datasource now uses the H2 database.
- Saving in the /var/lib/h2/myshort-devDb, production from docker-registry-web

*	deleted:    target/test-reports/TESTS-TestSuites.xml
- Deleting. Not supposed to be checked in.
*	new file:   web-app/WEB-INF/applicationContext.xml
*	new file:   web-app/WEB-INF/sitemesh.xml
*	new file:   web-app/WEB-INF/tld/c.tld
*	new file:   web-app/WEB-INF/tld/fmt.tld
- From the docker-registry-web, as the app failed without applicationContext.xml
Merge branch 'master' of https://github.com/marcellodesales/myshorturl