Added comment to JDBC
Added profiling to mysql for jdbc
Merge branch 'm1.jdbc' into m1.springjdbc.ch1

Conflicts:
	src/main/java/org/javatalks/training/hibernate/jdbcdao/UserJdbcDao.java
Merge branch 'm1.springjdbc.ch1' into m1.springjdbc.ch2
Merge branch 'm1.springjdbc.ch2' into m1.mybatis
Merge branch 'm1.mybatis' into m2.entitylifecycle