Implemented page/ section switching from the homepage.
	renamed:    src/main/webapp/jsp/weddinginfo.jsp -> src/main/webapp/jsp/planning.jsp
	modified:   src/main/webapp/jsp/engagement.jsp
	modified:   src/main/webapp/jsp/home.jsp
	modified:   src/main/webapp/jsp/planning.jsp
	modified:   src/main/webapp/jsp/registry.jsp
	modified:   src/main/webapp/resources/css/home.css
	modified:   src/main/webapp/resources/js/home.js
	src/main/webapp/jsp/slideshow.jsp
	src/main/webapp/resources/css/color-classes.css
	src/main/webapp/resources/css/slideshow.css
	src/main/webapp/resources/js/engagement.js
	src/main/webapp/resources/js/planning.js
	src/main/webapp/resources/js/registry.js
Implemented switching in between pages/ sections.

- Mostly JS Updates
- Added separate CSS files and JS files for each section
- Note: Not really necessary, but practicing good organization.  Would
like to implement some sort of css/ js packager.