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
Merge branch 'm2.entitylifecycle' into m2.ids
Merge branch 'm2.ids' into m3.associations.components
Merge branch 'm3.associations.components' into m3.associations.oto