Fontello is not theme specific

Need to add support for individual webfont bundles per theme.

Completed:

• Refactored entire code base to save the entire bundle configuration and icon arrays in individual theme setting variables.
• If no specific theme bundle is detected, the default one is loaded.
• Implemented fontello_update_7001 to combine existing variables into a single variable fontello_default_settings.
• Refactored the theme hook theme_fontello_icon to now utilize many different ways to try and render an icon.
• Updated fontello_block sub-module to use new bundle system.
• Implemented fontello_block_update_7001 to add default bundle to existing fontello block settings.