fixing bug #5283
fixing bug #5239 and #5242

Conflicts:
	kmelia/kmelia-war/src/main/java/com/stratelia/webactiv/kmelia/control/KmeliaSessionController.java
fixing bug #5311
Anonymous user is no more returned as latest readers
fixing bug #5260
fixing bug #5287 : displaying category description
fixing bug #5242
removing some code according to new PublicationDetail API about visibility period
ney #bugs #20140224 :  Fix the test failure with KmeliaSecurity