Replace artifactory by standard repository structure

This commit removes the usage of the Artifactory plugin and replaces
it with a standard repository structure using the -PdeploymentRepository
option.

This also updates the generated POM to be current.

spring-js-resources/spring-js-resources.gradle

@@ -46,3 +46,11 @@ jar {
 	dependsOn prepareResources
 }
 
+publishing {
+	publications {
+		mavenJava(MavenPublication) {
+			from components.java
+		}
+	}
+}
+