Convert pom.xml from dos to unix.
Update dependencies and fix build

- 0.6.0 rc2
- Match Brooklyn's jclouds and testng versions.
- Fix build by removing erroneous @Override
Use logback-custom.xml in src/main/resources

Move custom logback.xml to assembly
Various fixes

- Add dependency on brooklyn-networking and Brooklyn 0.7.0 snapshot
- Fail install if init-brooklyn-db.sh script fails
- Unset JAVA_HOME when running install
- Fix pid file location for shutdown
- Disconnect Postgres on stop, just to be sure

Last two should ensure clean shutdown in normal cases.
Move OpenGamma applications to app package

- Rename OpenGammaCluster to ElasticOpenGammaApplication.
- Move cluster factory creation to OpenGammaClusterFactory class
Adds CloudStackOpenGammaApplication

Runs OpenGamma behind a subnet and uses CloudStack's load balancer
rather than Nginx.
Expose ConfigKey for initial server properties file

Defaults to classpath:/io...brooklyn.properties.

Also adds a document explaining the configuration files included with
Brooklyn and how they have been modified from the OpenGamma example set.