Moved the bundled Netbeans onto the correct folder (since we're no longer under sdk/)

Added some files to gitignore (the private folder stores things like opened files of a project)

-> Delete your nbproject/private/ to retrigger an netbeans download to the new location

.gitignore

@@ -17,4 +17,6 @@ jme3-project-baselibs/src/com/jme3/gde/project/baselibs
 jme3-core-baselibs/nbproject/project.xml
 jme3-core-libraries/nbproject/project.xml
 build
-.gradle
+.gradle
+netbeans
+*/nbproject/private/*

build.gradle

@@ -81,14 +81,14 @@ task checkPlatformConfig {
     description = "Downloads the NetBeans platform base and registers it in the SDK project if needed"
     def platformFile = file("nbproject/private/platform-private.properties")
     if(!platformFile.exists()){
-        def netbeansFolder = file("../netbeans")
+        def netbeansFolder = file("netbeans")
         if(!netbeansFolder.exists() || netbeansFolder.list().length == 0){
             println "Downloading NetBeans Platform base, this only has to be done once.."
             def f = file("netbeans.zip")
             new URL(netbeansUrl).withInputStream{ i -> f.withOutputStream{ it << i }}
             copy{
                 from zipTree(f)
-                into "../"
+                into "."
             }
             f.delete()
         }