convert to spring restapi
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/ge/edu/sangu/unisys/client/servlets/EventServlet.java
	src/main/java/ge/edu/sangu/unisys/client/servlets/ScoresServlet.java
	src/main/java/ge/edu/sangu/unisys/client/servlets/SignInServlet.java
	src/main/java/ge/edu/sangu/unisys/client/servlets/UserServlet.java
	src/main/java/ge/edu/sangu/unisys/client/utils/UserCache.java
	src/main/java/ge/edu/sangu/unisys/ws/UniSys.java
	src/main/java/ge/edu/sangu/unisys/ws/UniSysService.java