Replace message content
Rename ImageServer module to image-server
Merge branch 'refs/heads/ImageServer' into dev
Merge remote-tracking branch 'refs/remotes/origin/dev' into dev

Conflicts:
	ImageServer/src/main/java/server/LifeStreamMessages.java
	image-server/src/main/java/client/Client.java
	image-server/src/main/java/server/DistributedNode.java
	image-server/src/main/java/server/ImageMessage.java
	image-server/src/main/java/server/LifeStreamMessages.java
	image-server/src/main/java/server/Server.java
	image-server/src/test/java/server/DistributedNodeTest.java
Refine readme
Merge branch 'dev' of github.com:yyfearth/life-stream into dev
Merge branch 'dev'