Remove constraint dialog was done near the add constraint one. This is specially important as the constraints are not visual shapes and cannot be selected even they appear on tree.
Also I had fixed longer standing bug like delete worked only as a hider operation. Right now it really removes the unreferenced geometry.
A small tweak is that Top, Bottom, Axo, etc. views are compacted in one button popup. By compacting this 7 views makes that in a 1280 screen the toolbars can fit in one row.
There are still some bugs in filtering I tried to address but not yet found a solution.