Trace dag web ui test success.

#354

Feature/365

#365

Feature/367 move data define to storage module

# Conflicts:
#	apm-collector/apm-collector-ui/src/main/java/org/skywalking/apm/collector/ui/dao/InstanceEsDAO.java

#365

2. Move all data define to storage module

#367

fix operation name that span created by spring plugin is not correct

#360

fix trace annotation not work

support trace annotation

#360

fix create segment failed

#351

Update instance heart beat time that receive from jam metric service.

#358

Fix a typo.

fix occur exception when request mapping of method without values

add default span layer

Feature/351

#351

#351