Arch: added an option to section planes to allow non-solids to be cut too
Arch: small fix in section planes
+ fixes #0001565: Images in the 3D plane are not shown after opening a project
+ fixes #0001354: Crash on using Enter-Key for confirmation of chamfer or fillet entries
Correction to use Value to convert units to mm from any
+ fixes #0001579: exportCSG.shape2polyhedron supplies wrong parameters to mesher
renable DRAWEXE exporter

This reverts commit 4c48bdf2166f273e60bcaf95281b7dde726db2f5.
support for Part::Loft in exportDRAWEXE