Inject StatusBarManager, instead of singletonning.

Change-Id: If4bf7c53ade24b6cc3b637aa9ac92410a0b64889
Reviewed-on: http://gerrit.dmdirc.com/2926
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

src/com/dmdirc/Server.java

     /** The config provider to write user settings to. */
     private final ConfigProvider userSettings;
 
+    /** The manager to use to add status bar messages. */
+    private final StatusBarManager statusBarManager;
+
     /**
      * Creates a new server which will connect to the specified URL with
      * the specified profile.
      * @param tabCompleterFactory The factory to use for tab completers.
      * @param identityFactory The factory to use to create identities.
      * @param messageSinkManager The sink manager to use to despatch messages.
+     * @param statusBarManager The manager to use to add status bar messages.
      * @param windowManager Window Manager
      * @param channelFactory The factory to use to create channels.
      * @param queryFactory The factory to use to create queries.
             final TabCompleterFactory tabCompleterFactory,
             final IdentityFactory identityFactory,
             final MessageSinkManager messageSinkManager,
+            final StatusBarManager statusBarManager,
             final WindowManager windowManager,
             final ChannelFactory channelFactory,
             final QueryFactory queryFactory,
         this.queryFactory = queryFactory;
         this.rawFactory = rawFactory;
         this.userSettings = userSettings;
+        this.statusBarManager = statusBarManager;
 
         setConnectionDetails(uri, profile);
 
      * Called when we fail to receive a ping reply within a set period of time.
      */
     public void onPingFailed() {
-        StatusBarManager.getStatusBarManager().setMessage(new StatusMessage(
+        statusBarManager.setMessage(new StatusMessage(
                 "No ping reply from " + getName() + " for over "
                 + ((int) (Math.floor(parser.getPingTime() / 1000.0)))
                 + " seconds.", getConfigManager()));

test/com/dmdirc/ServerTest.java

 import com.dmdirc.interfaces.config.IdentityFactory;
 import com.dmdirc.messages.MessageSinkManager;
 import com.dmdirc.ui.WindowManager;
+import com.dmdirc.ui.core.components.StatusBarManager;
 import com.dmdirc.ui.input.TabCompleterFactory;
 
 import java.net.URI;
     @Mock private ChannelFactory channelFactory;
     @Mock private QueryFactory queryFactory;
     @Mock private RawFactory rawFactory;
+    @Mock private StatusBarManager statusBarManager;
 
     private Server server;
 
                 tabCompleterFactory,
                 identityFactory,
                 messageSinkManager,
+                statusBarManager,
                 windowManager,
                 channelFactory,
                 queryFactory,