Merge pull request #11 from juliooc/master

Added check balance, bill and transfer page.
- Removed css from source folder
- Removed index.css from www folder
- Added icons to main header
- Implemented calling from the header
- Signout working
Fixed 'scrolling to show hidden content'
Fixed pin back button
- Changed cards view on main screen
- Changed navigation style on main screen
Added fixed value to form pages