rm CommonUtil.getIpAddr
change version
Merge branch '1.10.x-hotfix' into dev

Conflicts:
	pom.xml
change the FileUtil.readLine reaturn type to List
refact Validator and Upload Validator etc.
up
add CommonUtil.fetchUrl api
add CommonUtil.getCenterCoord('x1,y1 x2,y2 x3,y3') api
refact log
refact
refact
fixed CommonUtil.resolveUrl issue
add CommonUtil.resolveCoords feature
add new feature
fixed SimpleCache.put(key, null) issue
update.log