Merge pull request #92 from Ghostwalker71/feature/collision_obj_import

Avoid having to force updates on objects.
Cleaned random changes from rigged mesh import
Skeleton.nif import edits in progress
Fix issue where parent attribute was read only, due to incorrect type;
bone instead of edit_bones. Also removed unnecessary b_armature
parameter for import_bones function.
Removed Edit/Object mode switching which was causing errors with name
strings, specially utf-8 encoding.
Skeleton only import With parenting now works
Armatures import completely & are properly active in blender.
Fixed error introduced during parenting decipher
Changed edit toggle to mode set and mesh object is now selected after
import completes