add UI for product Details

add UI for product Details
optimize product Detail UI

optimize product Detail UI
optimize product and home UI

optimize product and home UI
Merge remote-tracking branch 'origin/master'

Conflicts:
	subway/AndroidManifest.xml
	subway/gen/com/subway/R.java
	subway/res/layout-hdpi/activity_meals.xml
	subway/res/layout-xhdpi/activity_meals.xml
	subway/res/values/strings.xml
	subway/src/com/subway/activity/MenuActivity.java
	subway/src/com/subway/util/Constant.java