[Soc-2016-dev] Weekly Report #06, Layer Manager

[Julian Eisel]

Hi all,

Here's my report for week #6, you can also find it on my wiki page:
https://goo.gl/9y3eki

Didn't manage to spend much time on Blender this week, mainly due to
an upcoming exam. This will likely keep me busy beginning of next week
as well.

=== What I did this week ===

* Support collapsing/expanding layer groups (see .gif)
* Create new layer groups just before first selected element, not at
end of list.
* Make layer drag & drop work with layer groups
* Fixed a couple of minor issues with layer groups
* Talked quite a bit with other devs on general design and viewport integration.

=== Next Week ===
Going to have some fun at the German BlenderDay next week :) Should be
able to do some work still.

* Give objects information about the layers they are in.
* Fix undo and file read/write of object layers (which is still not working)
* Start reducing usage of old system by replacing layer bit access
with API functions from the new system.