Fix Gradle warnings when using recent version(1.8)
Use javaexec rather than ant.java for GwtCompile task
Use javaexec rather than ant.java for DevMode task
Tie the gwt plugin to war plugin lifecycle
Cleanup build.gradle and update wrapper version
Rename package and groupId to org.gradle.api.plugins
Add gwt dependencies if gwtVersion set
Add GWT dependencies, build sources Jar, find Sources from dependent projects
Update gitignore
Only show GWT compiler output with info level
Publish first version