Blender Git Loki

Graph Editor backgdrop usability changes

* Opacity setting
* Saving set camera to file
* Own Panel for backdrop settings

Merge branch 'master' into wiggly-widgets

Widgify the Graph Editor backdrop

Adds the basic cage widget to the Graph Editor backdrop. The backdrop
drawing while scaling needs to be corrected still, but besides from that
(almost) everything works now.

Fix compiling errors after Multiview commit

Merge branch 'master' into wiggly-widgets

Conflicts:
source/blender/blenloader/intern/versioning_270.c
source/blender/makesdna/DNA_view3d_types.h
source/blender/windowmanager/CMakeLists.txt
source/blender/windowmanager/intern/wm_operators.c

Fix T44282: Image sampling line disappears after a while

Graph Editor backdrop from camera

Adds an option for the Graph Editor to show the view plane of a
selectable camera as a backdrop.
Next step: Widgify it!

Merge branch 'master' into wiggly-widgets

Conflicts:
source/blender/editors/space_view3d/view3d_ops.c

Merge branch 'master' into wiggly-widgets

Merge branch 'master' into wiggly-widgets

Cleanup: Use an own struct for the sequencer image resize widget

Merge branch 'master' into wiggly-widgets

Sequencer image resize widget: Make it resize the image buffer

Minor Cleanup

Merge branch 'master' into wiggly-widgets

Sequencer image resize widget: Initial visual-only implementation

Silly whitespace fix to test git config

Merge branch 'master' into wiggly-widgets

Conflicts:
source/blender/editors/include/ED_transform.h
source/blender/gpu/intern/gpu_buffers.c

Merge branch 'master' into wiggly-widgets

Conflicts:
source/blender/blenloader/intern/versioning_270.c
source/blender/editors/include/ED_view3d.h

Merge branch 'master' into wiggly-widgets