Added a new property: web.displayUserPanel

This property allows the administrator to hide the user related part of
the top panel. This can come handy if there's no use for it (i.e. if
Gitblit runs as Gerrit plugin).

releases.moxie

     - Freemarker 2.3.20 (ticket-124)
     - Lucene 4.10.0 (ticket-159)
     - SSHD 0.13.0 (ticket-218)
+    settings:
+    - { name: web.displayUserPanel, defaultValue: 'true' }
     contributors:
     - James Moger
     - David Ostrovsky

src/main/distrib/data/defaults.properties

 # RESTART REQUIRED
 web.debugMode = false
 
+# Allows to hide the user logon form or dropdown menu from the top pane 
+# if it's not needed.
+#
+# SINCE 1.7.0
+web.displayUserPanel = true
+
 # Force a default locale for all users, ignoring the browser's settings.
 # An empty value allows Gitblit to use the translation preferred by the browser.
 #

src/main/java/com/gitblit/wicket/pages/RootPage.java

 		boolean authenticateAdmin = app().settings().getBoolean(Keys.web.authenticateAdminPages, true);
 		boolean allowAdmin = app().settings().getBoolean(Keys.web.allowAdministration, true);
 		boolean allowLucene = app().settings().getBoolean(Keys.web.allowLuceneIndexing, true);
+		boolean displayUserPanel = app().settings().getBoolean(Keys.web.displayUserPanel, true);
 		boolean isLoggedIn = GitBlitWebSession.get().isLoggedIn();
 
 		if (authenticateAdmin) {
 			}
 		}
 
-		if (authenticateView || authenticateAdmin) {
+		if (displayUserPanel && (authenticateView || authenticateAdmin)) {
 			if (isLoggedIn) {
 				UserMenu userFragment = new UserMenu("userPanel", "userMenuFragment", RootPage.this);
 				add(userFragment);