fixed bug: grayed out Text when connection failed.
- when no connection, text should be grayed out instead of applying Text Coloring for an updated price
- added FLAG_IS_CONNECTION_AVAILABLE sharedpreferences for flagging connectivity.
added check for frost theme preference in WidgetProvider when initializing
lightened price shadow color
- from #0A0A0A to #141414
added Font resources: preparation for font customizability