sequence creation, new emp ID from seq, JSP&test update
constraints on employee, one big dataset instead of bunch of small ones
TODOs
_new_employee => _employee_fields
DAO employee filter
JSP employee filter
Error pages, CSS, JS
mgr can return null and JSP can show null
js input validation
bit of css
beans+EE support
Now DAO handles connection by itself
backup before changing bean
deleted connector bean, merged singleton class into abstract parent, EmployeeDAO bean, bean invocation from servlet, correct tests
Merge remote-tracking branch 'refs/remotes/origin/Dmitry'

Conflicts:
	src/db/EmployeeDao.java
	src/db/EmployeeDaoJdbcImpl.java
	src/web/EmployeesServlet.java
	test/EmployeeTest.java
	test/EmployeesServletTest.java
	web/employees/_header.jsp
	web/employees/_new_employee.jsp