Icons: Increased icon background disc size.
Icons: Updated icon preview page.
Renamed icon classes and files.
Moved icon CSS files out of subfolder. Updated path to fallback PNG icons. Added missing search icon url. Updated delete icon filename.
Updated default icons from arrow to carat.
Removed old font icon test pages.
Moved Grunticon preview and loader.txt to demo center.
Revert "Icons: Increased icon background disc size".

This requires changes in structure CSS and we might want to tweak the disc style. Better to do this all at once after we completed the Grunticon implementation.
Included icons in jquery.mobile.css.
Updated Grunticon Loader text file.
Theme: Added missing and removed superfluous checkbox and radio icon classes.
Demos: Icon test page.
Demos: Added theme C to Grunticon test page.
Core CSS: No mini size for icon-only buttons when the ui-mini class is on a container.
Theme: Radio button icon background should be same color as icon set.
Increased icon bg disc size and icon-only button size. Adjusted icon and icon-only button offsets.
Textinput: Always use black icon for search input. No bg disc so it doesn't look like a submit button.
Textinput: Adjusted search input icon size.
Textinput: Changed the clear button to just disc and icon.

The button shadow will be removed from the JS in another commit (textinput refactor).
Theme: Adjusted icon bg disc color.