* applies data-themes appropriately to header,footer,page,and content roles
* finds first link in header or footer, applies left button class
* finds second link in header or footer, applies right button class
* if no left button, a back button is auto added (this can be disabled through $.mobile.addBackBtn)
* back buttons will not auto-add on the first page visited.
* all headings h1-6 are given ui-title class for constent styling in header and footer
* buttons in ui-bar,ui-header,ui-footer now all have consistent sizing and styling
Fixes#109Fixes#114Fixes#28Fixes#116