fix some bugs and improved usability in installing process
change screenshot and version in style.css + add hook on theme activation
up CF7 for v.3.5.2
fix update_option for page_for_posts
add exclude Privacy Policy page in wp_list_pages function for main nav
add hook 'check_shop_activation'
add enable/disable lightbox option in portfolio pages
add localization for some phrase in install process
Merge branch 'fix-usb' into develop

Conflicts:
	style.css