ESTIMOTE-9 Updated the look of the app, updated convertDate function

https://dotcreek.atlassian.net/browse/ESTIMOTE-9

Updated the style of the app, the show room in particular
Updated the convertDate function to return diferent parts of the date
Added the background images
Merge branch 'develop' of https://github.com/dotcreek/phonegap-backbone-estimotes into develop