Artit 20140608

pom
1.1 Add jstl taglib/ignore jsp-api version 2.0

jsp
1.2 import comomon/taglibs.jsp (edit import all jsp)
1.3 edit list_employee.jsp (delete employee link to using class.button_delete css
    and add jstl tag to check dateOfBirth for ex-sample

1.4 edit welcome.jsp layout

css
1.5 add class.button_delete link to icon/delete.png