Blender Git Loki

Buildbot: Correct previous commit

Buildbot: Use correct path to scripts

The `scripts` is to be included into the path, not just the
folder where the scripts are.

Also specify path to datafiles.

store pointer to node tree in modifier data

initial particle type and mesh emitter node

Buildbot: Attempt to make ctest use proper installed scripts

rename function_nodes folder to nodes and add bparticles tree type

Buildbot: Enable GTests and test step

various small improvements

LANPR: GP target reset button

Gpencil: Cleanup debug prints and comments.

Gpencil: Shrink functions and modifier is working properly.

Cleanup: spelling

Gpencil: Multiply modifier added. (not functioning)

Merge branch 'master' into functions

Gpencil: Renamed "Backbone" into "Length" modifier.

LANPR: intersection update button in GPU mode, small UI modifications.

LANPR: Only calculates intersection lines when not in software modes.

Merge branch 'master' into soc-2019-npr

Outliner: Sync selection from outliner to sequencer

Outliner selection events now sync to the sequencer. Still need
to support active strips

Outliner: Draw correct scene icon

Was drawing incorrect icon for scene