Changed datasource pool name in README to avoid conflict with jboss7 datasource example
Fixed SQL error caused by SchemaFixer in errai-jpa-demo-todo-list

Some SQL schemas do not store column names in lower case. This caused
SchemaFixer to incorrectly attempt to add a duplicate column causing a
failure to deploy via jboss.
Fixed NullPointerException ocurring in dev mode of the grocery demo
Added README for errai jaxrs demo
Excluded google-collect from classpath to prevent compilation conflict with guava
Added README for errai-cdi-demo-mobile
Moved Java sources to directories that match their package statements (fixes compile errors in eclipse)
Added explicit null checks so we can see which param is null in case of failure.
Merge branch '2.4'

Conflicts:
	errai-demos/errai-jpa-demo-todo-list/src/main/java/org/jboss/errai/demo/todo/server/SchemaFixer.java