AssetEditor v0.3

BugFixes:
* PackFile corruption issue
* Correctly transform normals when transforming meshes
* Splitting and combining meshes caused vertex count to grow
* Error when saving models with more then 4 LODs
* Normalize normals on save
* Bug causing mesh to not be selectable after made editable
* Camera zoom bug
* TreeView scrolling to the top
* Show warning instead of crash if CA file is missing
* Lod for groups not working
* Lod generation loosing animation information

Features:
* Lock groups so they cant be edited
* TreeView reflecting scene selection (no multiselect as of now)