WTD-1048 Originally did a lot of this work in warp1048 by mistake This commit pulls in all /platform-only changes from that branch Mods are mostly related to WTD-1046 specifically, but also touch toolbar and buttons
WTD-1002 SplitPaneController added to edit-object.html; CSS modded to remove positioning that is now under splitter control;
Merge in SCSS files and platform markup which supports autoflow tabular views for WTD-611 into the open-source-friendly master branch.