Delete Section con ajax
Merge branch 'master' of https://github.com/jkamcc/magazine-spring

Conflicts:
	client/src/main/java/org/jks/web/SectionController.java
	client/src/main/webapp/WEB-INF/views/showSections.jsp
	client/src/main/webapp/resources/css/sass/main.scss
register page AJAX, Service all methods