organize header information and add columns div syntax to appropriate places
add icon images to img file
change header elements' (logo, navigation bar, image banner) css properties
create basic grid for top header
create adaptive grid for navigation when the sceren size shrinks and change it to a icon base navigation bar
Merge branch 'origin/editingHeaderContent'

resolve Conflicts in:
	_project/css/main.css
	_project/home.html