Update Render engine name on exporter.
Update links to bug tracker and Git wiki
Load news dynamic libraries after update EXR version to 2.1
Separate code for 'render' and 'render preview' prevent use render layers.
Sync some light types with Blender.
Review sppm integrator options based on YafaRay forum report.
Need more test.
Normalize exporter names.
Delete some comments.
Create own material buttons panel.
Normalize some exporter names.
Normalize render engine name.
Sync light types with Blender names.
Delete some unused comments.
Change drop menu name options for not use menu title on GUI.
Fix how sphere light geometry is draw on UI.
Applied style code.
Start review particles code.
Normalize render engine names.
Fix name for camera Blender property pointer.
Test for not show image settings when render into blender is use.
Add some options for EXR format.
Normalize render engine names.
Delete 'stamp' label.
Apply UI changes for review SPPM options.
Add 'prop_scene.py' file for a new scene panel.
Change name to custom nodes file
Merge branch 'merge_SSS' of https://github.com/TheBounty/Blender-Exporter into merge_SSS

Conflicts:
	prop/yaf_scene.py