initial grouping code to develop cartridge grouping feature
fixing kill-all (multiple groups with same cartridge type), adding check for cartridge_type and group when determining active cluster state
persisting Service Groups - initial impl.
initial impl. for composite application deployment and subscription
correcting spelling mistakes in getServiceGroupDefinition
Merge branch '4.0.0-grouping' of https://git-wip-us.apache.org/repos/asf/stratos into grouping
fixing minor log issues
change CompositeApplication according to the last Json format
moving beans to manager
persist CompositeApplication
initial composite applicaiton parser impl.
Creating Subscriptions from Composite App structure
change application definition to allow inner groups subscribable details
Subscription structure initial impl.
adding composite application monitor
Merge branch '4.0.0-grouping' of https://git-wip-us.apache.org/repos/asf/stratos into grouping
persisting composite app subscriptions and group subscriptions
alias validation and a minor bug
Merge Grouping SM side changes
Merge branch '4.0.0-grouping' of https://git-wip-us.apache.org/repos/asf/stratos into 4.0.0-grouping
Merge branch '4.0.0-grouping' of https://git-wip-us.apache.org/repos/asf/stratos into grouping

Conflicts:
	components/org.apache.stratos.manager/src/main/java/org/apache/stratos/manager/composite/application/CompositeApplicationManager.java
	components/org.apache.stratos.manager/src/main/java/org/apache/stratos/manager/composite/application/parser/DefaultCompositeApplicationParser.java
	components/org.apache.stratos.manager/src/main/java/org/apache/stratos/manager/manager/CartridgeSubscriptionManager.java
	components/org.apache.stratos.manager/src/main/java/org/apache/stratos/manager/subscription/CompositeAppSubscription.java
	components/org.apache.stratos.rest.endpoint/src/main/java/org/apache/stratos/rest/endpoint/services/ServiceUtils.java
	components/org.apache.stratos.rest.endpoint/src/main/java/org/apache/stratos/rest/endpoint/services/StratosAdmin.java