fix cny symbol
beautify gradle build files
add cropImageActivity
Merge branch 'feature/fancy_qr_code' of https://github.com/bither/bither-android into feature/fancy_qr_code

Conflicts:
	bither-android/res/values-zh-rTW/strings.xml
	bither-android/res/values-zh/strings.xml
	bither-android/res/values/strings.xml
	bither-android/src/net/bither/fragment/hot/OptionHotFragment.java
format string
Merge branch 'develop' of https://github.com/bither/bither-android into feature/fancy_qr_code
Merge branch 'feature/fancy_qr_code' of https://github.com/bither/bither-android into feature/fancy_qr_code

Conflicts:
	bither-android/src/net/bither/util/ImageManageUtil.java