SDK: fix #152 SceneComposer/SceneViewer bug in open/close Scene
Merge pull request #153 from davidB/fix_152

SDK: fix #152 SceneComposer/SceneViewer bug in open/close Scene
Added eclipse project entries to gitignore.
Fixed some issues with SDK lodGenerator wizard
- setting 10 lod levels was not working
- generating lod levels didn't mark the file as modified if there was no lod levels before.
SDK : One can now rename or delete an animation in the Scene Explorer
Fixed issue in shadows15.glsllib, edge bilinear filtering was wrong when using tetxureGather
Updated documentation of the Bone class and changed names of the transforms variables and accessors so that they properly describe what they are an are misleading anymore.
Kept old methods as deprecated to not break user code.
Changed all calls to the deprecated methods in the engine.
Upped JME version to 3.1.0 with the tag "snapshot-github"
Somehow trying to get nightly back...
added *.dll to git ignore because I was tired to see extracted natives in my working copy
created a createZipDistribution task on the gradle build
Changed the build so that the produced zip has a valid path
The packaged zip now contains the sources
- adding show skeleton action (stub)
- show additional bone only when no bones are available
merge from jmonkeyengine/master
Merge origin/master
Merge jmonkeyengine/master

Conflicts:
	sdk/jme3-scenecomposer/src/com/jme3/gde/scenecomposer/SceneComposerTopComponent.java