DF-2071 added AbstractTree and QuadTree
[DF-2033] fix bug
[DF-1973] skybox dialog uses create/delete buttons
[DF-1823] - additional visibility checkboxes for UI Editor hierarchy tree.
[DF-2116] Fixed bug when trying to get not existed lod layer.
[DF-2014] Added collision objects and debug draw for user nodes/ light/ sound
Merge branch 'development' of https://github.com/dava/dava.framework into development
Compilation error fix
[DF-185] Fixed projects
[DF-2014] Fixed debug draw for userObjects
[DF-185] Restored y and z axis draw in normal mode
[DF-2048] Fixed bug, when custom properties were hidden for newly added entities.
Merge branch 'development' of https://github.com/dava/dava.framework into development
[DF-2136]  implement issue
[DF-2128] More appropriate save.
Merge branch 'development' of https://github.com/dava/dava.framework into development
[DF-2154] fix issue
win project fix
[DF-2162] - SetInputEnabled() support is implemented for UITextField iOS.
[DF-2153] fix issue