Renaming bl_idname of import images as plane addon from...

Renaming bl_idname of import images as plane addon from "import.image_to_plane" to "import_image.to_plane" (import is a keyword in python...). Thanks to P. Staples in tracker!

io_import_images_as_planes.py

@@ -165,7 +165,7 @@ class IMPORT_OT_image_to_plane(Operator, AddObjectHelper):
     """Create mesh plane(s) from image files """ \
     """with the appropiate aspect ratio"""
 
-    bl_idname = "import.image_to_plane"
+    bl_idname = "import_image.to_plane"
     bl_label = "Import Images as Planes"
     bl_options = {'REGISTER', 'UNDO'}