add context otherwise preference between leveldb and memdb is operating

system dependent.

Author: tamasblummer

server/src/main/resources/context/memdb-profile.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<beans 
+<beans profile="memdb" 
     xmlns="http://www.springframework.org/schema/beans"
 	xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"