changed time data format from timestamp to ISO-8061
Merge remote-tracking branch 'origin/master'

Conflicts:
	modules/core/src/main/java/com/crashnote/core/collect/BaseCollector.java
	modules/core/src/test/scala/com/crashnote/test/core/unit/collect/EnvCollectorSpec.scala
	modules/core/src/test/scala/com/crashnote/test/core/unit/collect/LogCollectorSpec.scala
	servlet/src/test/scala/com/crashnote/test/servlet/unit/collect/ServletSessionCollectorSpec.scala