Implement spring Transactions (w/ jdbcTemplate & annotation)
Merge branch 'feature/datasource' of https://github.com/Pombo/computer-database into feature/datasource

Conflicts:
	pom.xml
	src/main/java/com/excilys/computerdatabase/dao/impl/CompanyDaoImpl.java
	src/main/java/com/excilys/computerdatabase/dao/impl/ComputerDaoImpl.java
	src/main/java/com/excilys/computerdatabase/dao/impl/LogDaoImpl.java
	src/main/java/com/excilys/computerdatabase/service/impl/CompanyServiceImpl.java
	src/main/java/com/excilys/computerdatabase/service/impl/ComputerServiceImpl.java
	src/main/java/com/excilys/computerdatabase/service/impl/LogServiceImpl.java
	src/main/webapp/WEB-INF/applicationContext.xml