Documentation -  minor correction
minor improvement in visualization for angles < 5 deg.
progress on dxf
Documentation - added scripting reference guide
improved speed of undo framework during delete selected entities
Merge remote-tracking branch 'panek/master'
Merge remote-tracking branch 'kus/master'
fixed info widget
improved speed of isCouplingAvailable using cache
reuse of module and coupling XML description (memory leak!!! but faster code)
added user memory to test-fast
improved speed of fieldtoolbar
minor improvements
windows fix
fixed memory leak
load in info use QTimer
warning output fix