Moved placeholder configurer to config class
Optimize imports
Added connection pool (testing implementation)
Commented pool component definition because of service falling
Changed package structure
Added simple page name interceptor using AspectJ
Added interceptor for exception at service layer
Added pool observer and fixed commented return
Added cglib to pom, edited comment
Added aspects for observing connection pool.
Enhanced connection pool.
Added log4j.
Configured default page for 404 error code
Merge branch 'feature-aop' into restService
Merge branch 'restService'