implementation of rss and web statistics
jack setting
added 5 new themes
image file for previewing themes.
link to change theme in user account page.
fix image path for lake theme.
theme is associated to user.
default theme for non-user and new user
Merge branch 'RSS_WebStats' of github.com:hidroh/opencart into theme_rss_stats
update sql statement for theme and login features.
Merge branch 'trung-jackson' of github.com:hidroh/opencart into theme_rss_stats

Conflicts:
	admin/config.php
	catalog/controller/account/account.php
	config.php