LightAdmin 1.2.0.RC1 published to Maven Central

- Using Spring Platform 1.1.2.RELEASE for LA dependency management
- Upgrading LA to be used with Spring Boot 1.2.3.RELEASE
- Upgrading lightadmin-springboot application to use Spring Boot 1.2.3.RELEASE and the latest LA

#145 Release version 1.0.1.RELEASE

 #136 Release version 1.0.0.RELEASE

#109 Publishing LightAdmin release versions to Maven Central

#99 Preparing 1.0.0.M2 release