Ajout de la banniere et du footer

.../java/fr/but/infoetu/MeetingPlannr/security/Security.java

src/main/resources/import.sql

src/main/resources/static/styles/main.css

src/main/webapp/WEB-INF/jsp/common/footer.jsp

src/main/webapp/WEB-INF/jsp/common/header.jsp

src/main/webapp/WEB-INF/jsp/public/login.jsp

src/main/webapp/WEB-INF/jsp/public/register.jsp

src/main/webapp/WEB-INF/jsp/user/detailRendezVous.jsp

src/main/webapp/WEB-INF/jsp/user/editMeeting.jsp

src/main/webapp/WEB-INF/jsp/user/editProfile.jsp

src/main/webapp/WEB-INF/jsp/user/profile.jsp

src/main/webapp/WEB-INF/jsp/user/rendezVous.jsp