EMAILPLT-87
- Adjusting the attachment image to no longer overlap Subject text
- The header images now line up with the row images
- Adjusting Demo class to correctly set the multipart and answered flags from sample json files
- Adjusted the Demo jsons to return a combination of the multipart and answered flags to be able to visually test the image locations
Merge branch 'EMAILPLT-87' of https://github.com/shawnconnolly/email-preview into shawnconnolly-EMAILPLT-87

Conflicts:
	src/main/java/org/jasig/portlet/emailpreview/dao/demo/DemoAccountService.java