Added option to configure beanstalk java system properties when building war file.
[RELEASE: 0.1.1-frontlinesms]
[POST-RELEASE: 0.1.1-frontlinesms -> 0.2-SNAPSHOT]
Fixed YAML generation - was using wrong label for option values
[RELEASE: 0.1.2-frontlinesms]
[POST-RELEASE: 0.1.2-frontlinesms -> 0.2-SNAPSHOT]