OBMFULL-6135 Remove prefixing the log messages
(OBMFULL-6106 frontport)
OBMFULL-6135 Add logging headers: thread, user, requestId
(OBMFULL-6106 frontport)

Conflicts:
	java/sync/services-module/src/main/java/org/obm/sync/resource/ResourceServlet.java
OBMFULL-6135 Add log on ResourceServlet
(OBMFULL-6106 frontport)