Added FascinatorPropertyPlaceHolderConfigurer to allow us to use our system-config.json configuration in our Spring ApplicationContext.

 Nested attributes are mapped in dot notation.

 e.g. { "config": { "configItem": "sample config" } }
becomes
 config.configItem=sample config
in the properties configuration
Merge branch 'the-fascinator-1.2' of https://github.com/the-fascinator/the-fascinator into the-fascinator-1.2