[#75] Remove reference to BrowserTopComponent.settings from layer.xml

The missing file breaks Rails debugging reporting the following message:

  Caused: java.io.FileNotFoundException: jar:file:/.../org-nbgit.jar!/org/nbgit/resources/BrowserTopComponentSettings.xml
    at org.netbeans.JarClassLoader$ResURLConnection.connect(JarClassLoader.java:870)
    at org.netbeans.JarClassLoader$ResURLConnection.getInputStream(JarClassLoader.java:906)
    at org.netbeans.core.startup.layers.BinaryFS$BFSFile.getInputStream(BinaryFS.java:736)
  Caused: java.io.FileNotFoundException

The change should not alter anything, since the component was not
persisted before either.

Also update the gitversioning .settings files to version 0.4 and give
the BrowserTopComponent class a more unique ID: org-nbgit-ui-browser.

Signed-off-by: Jonas Fonseca <fonseca@diku.dk>

src/org/nbgit/resources/layer.xml

@@ -72,7 +72,6 @@ made subject to such option by the copyright holder.
 
     <folder name="Windows2">
         <folder name="Components">
-            <file name="BrowserTopComponent.settings" url="BrowserTopComponentSettings.xml"/>
             <file name="gitversioning.settings" url="settings.xml"/>
         </folder>
         <folder name="Modes">

src/org/nbgit/resources/settings.xml

@@ -42,7 +42,7 @@ made subject to such option by the copyright holder.
 -->
 <!DOCTYPE settings PUBLIC "-//NetBeans//DTD Session settings 1.0//EN" "http://www.netbeans.org/dtds/sessionsettings-1_0.dtd">
 <settings version="1.0">
-    <module name="org.nbgit" spec="0.3"/>
+    <module name="org.nbgit" spec="0.4"/>
     <instanceof class="org.openide.windows.TopComponent"/>
     <instanceof class="org.nbgit.ui.status.GitVersioningTopComponent"/>
     <instance class="org.nbgit.ui.status.GitVersioningTopComponent" method="getDefault"/>

src/org/nbgit/ui/browser/BrowserTopComponent.java

@@ -53,7 +53,7 @@
 public final class BrowserTopComponent extends TopComponent {
 
     private static final String ICON_PATH = "org/nbgit/resources/icons/gitvcs-icon.png"; // NOI18N
-    private static final String PREFERRED_ID = "BrowserTopComponent"; // NOI18N
+    private static final String PREFERRED_ID = "org-nbgit-ui-browser"; // NOI18N
     private int commitIndex = -1;
 
     public BrowserTopComponent(BrowserModel model) {